When a famous mystery writer dies, Athena, Bobby and the 118 respond to the chaos caused by a citywide manhunt for buried treasure the author left behind.

The members of the 118 make calls to save a bridezilla at a disastrous wedding; Hen plays medical detective when her mother falls ill; Eddie and Christopher receive a visit from Carla; Athena uncovers a secret Bobby has been hiding.

Athena and the 118 are on high alert when a sniper is targeting members of the LAFD; Maddie makes a life decision.

The 118 are called to the tarmac when a flight attendant reaches her limit with her flight's passengers; Eddie worries Christopher will not accept him dating; Buck reconnects with an old flame.

After moving to the countryside, a couple clashes with the gun shop owners across the street; mutual video cameras record threats, fights and growing hostilities leading to shots fired and blood spilled.

The officers try to prevent dangerous fallout when a laptop containing sensitive information is stolen; a wedge is driven between Sam and Andy.

The team must diffuse a volatile situation when a student pushed to the limit by bullies brings a gun to school.

After moving to the countryside, a couple clashes with the gun shop owners across the street; mutual video cameras record threats, fights and growing hostilities leading to shots fired and blood spilled.

The officers try to prevent dangerous fallout when a laptop containing sensitive information is stolen; a wedge is driven between Sam and Andy.

The team must diffuse a volatile situation when a student pushed to the limit by bullies brings a gun to school.

After moving to the countryside, a couple clashes with the gun shop owners across the street; mutual video cameras record threats, fights and growing hostilities leading to shots fired and blood spilled.

The officers try to prevent dangerous fallout when a laptop containing sensitive information is stolen; a wedge is driven between Sam and Andy.

The team must diffuse a volatile situation when a student pushed to the limit by bullies brings a gun to school.

Dr. Manning and Dr. Charles assist in a complicated case helping a child who is no stranger to the ED; Dr. Marcel and Dr. Choi tend to a police officer with a mysterious gunshot wound; relationships are put to the test as secrets are revealed.

Dr. Charles and Goodwin fear Dr. Halstead is repeating his past mistakes when a patient with early onset Alzheimer's is brought into the E.D.; Maggie and Ben are concerned when one of Ben's students is admitted; Dr. Manning and Dr. Marcel disagree.

Dr. Charles evaluates a 15-year-old who is brought into the E.D. after an apparent fall off an overpass; Will sides with Dr. Asher on a risky treatment plan; tensions run high between Dr. Choi and Dr. Marcel.

Dr. Crockett is visited by two New Orleans detectives who have questions about his past; Dr. Choi puts his life in danger to save a child; Dr. Charles gives fatherly advice to his young daughter.

The staff adjusts to the new normal of the pandemic; Dr. Choi, Dr. Lanik and April fight on the front lines; Dr. Halstead and Hannah face a troubling reality; Dr. Charles tries to clear the air with his daughter following recent developments.

Goodwin announces a new ED Chief, and the choice doesn't make everyone happy; Dr. Manning takes a stand for her patient and finds herself dealing with the repercussions; Dr. Charles tends to family affairs.

Dr. Charles and April team up to take on a mysterious patient in the ED; Dr. Halstead is forced to make a life-or-death decision for one of his trial patients; Dr. Marcel is confronted by his past when a former acquaintance is brought into the ED.

Dr. Manning and Dr. Charles assist in a complicated case helping a child who is no stranger to the ED; Dr. Marcel and Dr. Choi tend to a police officer with a mysterious gunshot wound; relationships are put to the test as secrets are revealed.

Dr. Charles and Goodwin fear Dr. Halstead is repeating his past mistakes when a patient with early onset Alzheimer's is brought into the E.D.; Maggie and Ben are concerned when one of Ben's students is admitted; Dr. Manning and Dr. Marcel disagree.

Dr. Charles evaluates a 15-year-old who is brought into the E.D. after an apparent fall off an overpass; Will sides with Dr. Asher on a risky treatment plan; tensions run high between Dr. Choi and Dr. Marcel.

Dr. Crockett is visited by two New Orleans detectives who have questions about his past; Dr. Choi puts his life in danger to save a child; Dr. Charles gives fatherly advice to his young daughter.

The staff adjusts to the new normal of the pandemic; Dr. Choi, Dr. Lanik and April fight on the front lines; Dr. Halstead and Hannah face a troubling reality; Dr. Charles tries to clear the air with his daughter following recent developments.

Goodwin announces a new ED Chief, and the choice doesn't make everyone happy; Dr. Manning takes a stand for her patient and finds herself dealing with the repercussions; Dr. Charles tends to family affairs.

Dr. Charles and April team up to take on a mysterious patient in the ED; Dr. Halstead is forced to make a life-or-death decision for one of his trial patients; Dr. Marcel is confronted by his past when a former acquaintance is brought into the ED.

Dr. Manning and Dr. Charles assist in a complicated case helping a child who is no stranger to the ED; Dr. Marcel and Dr. Choi tend to a police officer with a mysterious gunshot wound; relationships are put to the test as secrets are revealed.

A man finds himself living between hostile neighbors on both sides, including a former U.S. marine with post-traumatic stress disorder; the neighbors' campaign of intimidation ramps up to the point of no return and ends with a deadly confrontation.

Andy and Nick investigate when a neighborhood drug lord threatens a priest's life; a young drug-runner's refusal to turn informant leads Traci to make a decision about her career; Chris and Swarek butt heads; Dov's relationship takes a dark turn.

The team must track down a young woman dying of a brain disease when she and her fiance go on a crime spree.

A man finds himself living between hostile neighbors on both sides, including a former U.S. marine with post-traumatic stress disorder; the neighbors' campaign of intimidation ramps up to the point of no return and ends with a deadly confrontation.

Andy and Nick investigate when a neighborhood drug lord threatens a priest's life; a young drug-runner's refusal to turn informant leads Traci to make a decision about her career; Chris and Swarek butt heads; Dov's relationship takes a dark turn.

The team must track down a young woman dying of a brain disease when she and her fiance go on a crime spree.

A man finds himself living between hostile neighbors on both sides, including a former U.S. marine with post-traumatic stress disorder; the neighbors' campaign of intimidation ramps up to the point of no return and ends with a deadly confrontation.

Andy and Nick investigate when a neighborhood drug lord threatens a priest's life; a young drug-runner's refusal to turn informant leads Traci to make a decision about her career; Chris and Swarek butt heads; Dov's relationship takes a dark turn.

The team must track down a young woman dying of a brain disease when she and her fiance go on a crime spree.

The team works together to identify the head of the brutal Los Temidos gang; Voight dives deeper into his informant Anna Avalos' past when her undercover role is threatened.

While out for a jog, Upton witnesses a horrible car crash and risks her own life to save the passengers; after learning more about the victims, the team must track down the man responsible for the brutal crash.

The team searches for a brutal killer with a signature modus operandi; Burgess and Ruzek double down in their fight to retain custody of Makayla.

The unit scrambles to search for one of its own who is in grave danger.

When a young man is shot outside the Cárabo Bakery, the team works to connect the shooting to bakery owner Javier Escano, who has been under surveillance; despite the increasing danger, Voight helps informant Anna Avalos get closer to their target.

Ruzek's search for the daughter of an old family friend leads the team into a serious drug investigation; Burgess and Ruzek struggle to move on from the emotional aftermath of Makayla's abduction.

Halstead takes a new recruit under his wing during an investigation; the dynamics are challenging, however, and questions arise over the recruit's complicated past.

The team works together to identify the head of the brutal Los Temidos gang; Voight dives deeper into his informant Anna Avalos' past when her undercover role is threatened.

While out for a jog, Upton witnesses a horrible car crash and risks her own life to save the passengers; after learning more about the victims, the team must track down the man responsible for the brutal crash.

The team searches for a brutal killer with a signature modus operandi; Burgess and Ruzek double down in their fight to retain custody of Makayla.

The unit scrambles to search for one of its own who is in grave danger.

When a young man is shot outside the Cárabo Bakery, the team works to connect the shooting to bakery owner Javier Escano, who has been under surveillance; despite the increasing danger, Voight helps informant Anna Avalos get closer to their target.

Ruzek's search for the daughter of an old family friend leads the team into a serious drug investigation; Burgess and Ruzek struggle to move on from the emotional aftermath of Makayla's abduction.

Halstead takes a new recruit under his wing during an investigation; the dynamics are challenging, however, and questions arise over the recruit's complicated past.

The team works together to identify the head of the brutal Los Temidos gang; Voight dives deeper into his informant Anna Avalos' past when her undercover role is threatened.

Top criminal investigators, forensic scientists and behavioral analysts track three serial killers.

Knowledge of insects by a forensic entomologist leads police to the killer of a wife and mother of two.

A serial killer in Spokane, Wash. murders prostitutes and leaves a bag with a smiley face on the victim's head.

After the murder of a wealthy Chicago man, Atwater and the team dig in to uncover the truth, suspecting there is more to the story than meets the eye.

Voight and the team delve into a cold case in search of clues to solve a shocking new crime; with its focus on buried memories, the case sparks concern for Burgess and Ruzek about Makayla's mental healing.

As the team closes in on drug kingpin Javier Escano, Voight is forced to lie to his undercover informant Anna to keep her on track; their deteriorating trust threatens an increasingly tenuous operation.

After an explosion rocks the case, the team scrambles to finally take down Escano as everyone nears their breaking point.

Still reeling from the death of informant Anna, Voight faces a new threat as he tries to keep the neighborhood clean; new wrinkles develop in the Upton, Halstead and Voight dynamic; the team gets a new chief.

When a convicted murderer hijacks a prison van, the team scrambles to find him and the abducted prison guard before it's too late; Burgess questions Ruzek's motives in a case, creating tension between the two.

The team investigates a string of brutal pharmacy robberies, and Halstead connects with one of the victims about their Army careers; Upton suspects there is more to the story and confides in Voight.

After the murder of a wealthy Chicago man, Atwater and the team dig in to uncover the truth, suspecting there is more to the story than meets the eye.

Voight and the team delve into a cold case in search of clues to solve a shocking new crime; with its focus on buried memories, the case sparks concern for Burgess and Ruzek about Makayla's mental healing.

As the team closes in on drug kingpin Javier Escano, Voight is forced to lie to his undercover informant Anna to keep her on track; their deteriorating trust threatens an increasingly tenuous operation.

After an explosion rocks the case, the team scrambles to finally take down Escano as everyone nears their breaking point.

Still reeling from the death of informant Anna, Voight faces a new threat as he tries to keep the neighborhood clean; new wrinkles develop in the Upton, Halstead and Voight dynamic; the team gets a new chief.

When a convicted murderer hijacks a prison van, the team scrambles to find him and the abducted prison guard before it's too late; Burgess questions Ruzek's motives in a case, creating tension between the two.

The team investigates a string of brutal pharmacy robberies, and Halstead connects with one of the victims about their Army careers; Upton suspects there is more to the story and confides in Voight.

After the murder of a wealthy Chicago man, Atwater and the team dig in to uncover the truth, suspecting there is more to the story than meets the eye.

Voight and the team delve into a cold case in search of clues to solve a shocking new crime; with its focus on buried memories, the case sparks concern for Burgess and Ruzek about Makayla's mental healing.

As the team closes in on drug kingpin Javier Escano, Voight is forced to lie to his undercover informant Anna to keep her on track; their deteriorating trust threatens an increasingly tenuous operation.

After an explosion rocks the case, the team scrambles to finally take down Escano as everyone nears their breaking point.

Still reeling from the death of informant Anna, Voight faces a new threat as he tries to keep the neighborhood clean; new wrinkles develop in the Upton, Halstead and Voight dynamic; the team gets a new chief.

When a convicted murderer hijacks a prison van, the team scrambles to find him and the abducted prison guard before it's too late; Burgess questions Ruzek's motives in a case, creating tension between the two.

The team investigates a string of brutal pharmacy robberies, and Halstead connects with one of the victims about their Army careers; Upton suspects there is more to the story and confides in Voight.

Lt. Boden and Jimmy are at odds in the aftermath of recent events; Kidd must deal with her volatile ex; Dawson puts on her best face in the pursuit of fostering Louie; Casey leaves town to attend a three-day summit.

Severide and Stella keep an eye out for Grant; Louie has Dawson questioning her dangerous career path; Casey's relationship with Susan Weller cools down; tensions between Borrelli and Boden reach a boiling point.

Casey and Dawson get caught in what may be a political mess; Stella has a big decision to make about her boyfriend; members of the squad are in a dangerous situation after responding to a car accident; Severide befriends a famous socialite.

Casey gets help from Susan Weller for an urgent personal matter; Severide is given an opportunity to travel with Travis Brenner; Stella saves a street kid from a tunnel fire.

Casey is forced to use extreme measures to save a father and daughter from an acid spill; Dawson and Brett respond to an elderly woman who has a difficult senior advocate; Otis shares some exciting news.

Casey is unable to save a woman trapped in a burning house; Herrmann is determined to catch a mysterious tagger that targets the firehouse; Boden has an unexpected visitor; a teenager is injured during a romantic proposal.

Dawson faces repercussions after she hits a pedestrian with the ambulance en route to a call; Casey and Severide continue to investigate an arson case; Chief Boden must decide whether to attend an important event in New York.

Things don't go as planned when Dawson and Antonio's parents come to town for their anniversary; Chief Boden deals with his stepson James' secret; Casey tries to save a young boy during a call to a warehouse; Otis and Kidd become competitive.

Casey and Dawson run into a problem when they apply to permanently adopt Louie; Jeff Clarke gives an interesting proposition to Severide; Otis persuades Herrmann to throw a party at Molly's to celebrate the bar's 100th anniversary.

Lt. Boden and Jimmy are at odds in the aftermath of recent events; Kidd must deal with her volatile ex; Dawson puts on her best face in the pursuit of fostering Louie; Casey leaves town to attend a three-day summit.

Severide and Stella keep an eye out for Grant; Louie has Dawson questioning her dangerous career path; Casey's relationship with Susan Weller cools down; tensions between Borrelli and Boden reach a boiling point.

Casey and Dawson get caught in what may be a political mess; Stella has a big decision to make about her boyfriend; members of the squad are in a dangerous situation after responding to a car accident; Severide befriends a famous socialite.

Casey gets help from Susan Weller for an urgent personal matter; Severide is given an opportunity to travel with Travis Brenner; Stella saves a street kid from a tunnel fire.

Casey is forced to use extreme measures to save a father and daughter from an acid spill; Dawson and Brett respond to an elderly woman who has a difficult senior advocate; Otis shares some exciting news.

Casey is unable to save a woman trapped in a burning house; Herrmann is determined to catch a mysterious tagger that targets the firehouse; Boden has an unexpected visitor; a teenager is injured during a romantic proposal.

Dawson faces repercussions after she hits a pedestrian with the ambulance en route to a call; Casey and Severide continue to investigate an arson case; Chief Boden must decide whether to attend an important event in New York.

Things don't go as planned when Dawson and Antonio's parents come to town for their anniversary; Chief Boden deals with his stepson James' secret; Casey tries to save a young boy during a call to a warehouse; Otis and Kidd become competitive.

Casey and Dawson run into a problem when they apply to permanently adopt Louie; Jeff Clarke gives an interesting proposition to Severide; Otis persuades Herrmann to throw a party at Molly's to celebrate the bar's 100th anniversary.

Lt. Boden and Jimmy are at odds in the aftermath of recent events; Kidd must deal with her volatile ex; Dawson puts on her best face in the pursuit of fostering Louie; Casey leaves town to attend a three-day summit.

Severide and Stella keep an eye out for Grant; Louie has Dawson questioning her dangerous career path; Casey's relationship with Susan Weller cools down; tensions between Borrelli and Boden reach a boiling point.

Casey and Dawson get caught in what may be a political mess; Stella has a big decision to make about her boyfriend; members of the squad are in a dangerous situation after responding to a car accident; Severide befriends a famous socialite.

Casey gets help from Susan Weller for an urgent personal matter; Severide is given an opportunity to travel with Travis Brenner; Stella saves a street kid from a tunnel fire.

Casey is forced to use extreme measures to save a father and daughter from an acid spill; Dawson and Brett respond to an elderly woman who has a difficult senior advocate; Otis shares some exciting news.

Casey is unable to save a woman trapped in a burning house; Herrmann is determined to catch a mysterious tagger that targets the firehouse; Boden has an unexpected visitor; a teenager is injured during a romantic proposal.

A wealthy executive causes conflict after forbidding his neighbors access to his extensive lands; one local handyman fights to keep the roads and trails open for all, a struggle that ends when one man lies dead.

A chaotic night at the station leads to an investigation by Internal Affairs; Gail struggles to recover from her harrowing abduction; Andy discovers a secret about Nick's past.

The team tries to end a standoff at a hospital between gang members and a man trying to protect his injured brother.

A wealthy executive causes conflict after forbidding his neighbors access to his extensive lands; one local handyman fights to keep the roads and trails open for all, a struggle that ends when one man lies dead.

A chaotic night at the station leads to an investigation by Internal Affairs; Gail struggles to recover from her harrowing abduction; Andy discovers a secret about Nick's past.

The team tries to end a standoff at a hospital between gang members and a man trying to protect his injured brother.

A wealthy executive causes conflict after forbidding his neighbors access to his extensive lands; one local handyman fights to keep the roads and trails open for all, a struggle that ends when one man lies dead.

A chaotic night at the station leads to an investigation by Internal Affairs; Gail struggles to recover from her harrowing abduction; Andy discovers a secret about Nick's past.

The team tries to end a standoff at a hospital between gang members and a man trying to protect his injured brother.

Dawson and Casey face legal issues as they try to retain legal guardianship of Louie; Severide continues to look for a bone marrow procedure to help Anna; Brett opens up to Dawson.

Severide agrees to a bone marrow donation; Casey and Dawson attempt to find harmony at home; Otis and Mouch plan to create a PSA to encourage people to join the Chicago Fire Department.

Dawson struggles to control her emotions during an ambulance ride with a pregnant teen; the firefighters rush to a building fire; Casey must make a quick decision when two victims both need life-saving assistance; Severide shares a bond with Anna.

A dangerous man is on the loose with a vendetta against Lt. Casey and the Firehouse 51 squad; Antonio's ex-wife appears; Casey has a gift for Dawson.

Chief Anderson feels his authority was undercut after Chief Boden makes a decision that overrides Anderson's when both squads respond to the scene of a dangerous accident; Severide ponders a lifechanging decision; Herrmann does a good deed.

Citing a need for improvement, Chief Anderson reassigns members of 51 to other firehouses, leaving the crew members to make the best of their respective new situations; Severide struggles with an important decision.

Tal and Mariah look to end the search for "the arrangements" once and for all; Tal and Kimmer contemplate what's next for their relationship.

After their mother unexpectedly dies, Emma and Phoebe are shocked to learn her death is suspicious; reeling from recent events and with worsening insomnia, Emma is forced to come clean to her husband Robert about her past.

Severide agrees to a bone marrow donation; Casey and Dawson attempt to find harmony at home; Otis and Mouch plan to create a PSA to encourage people to join the Chicago Fire Department.

Dawson struggles to control her emotions during an ambulance ride with a pregnant teen; the firefighters rush to a building fire; Casey must make a quick decision when two victims both need life-saving assistance; Severide shares a bond with Anna.

A dangerous man is on the loose with a vendetta against Lt. Casey and the Firehouse 51 squad; Antonio's ex-wife appears; Casey has a gift for Dawson.

Chief Anderson feels his authority was undercut after Chief Boden makes a decision that overrides Anderson's when both squads respond to the scene of a dangerous accident; Severide ponders a lifechanging decision; Herrmann does a good deed.

Citing a need for improvement, Chief Anderson reassigns members of 51 to other firehouses, leaving the crew members to make the best of their respective new situations; Severide struggles with an important decision.

Tal and Mariah look to end the search for "the arrangements" once and for all; Tal and Kimmer contemplate what's next for their relationship.

After their mother unexpectedly dies, Emma and Phoebe are shocked to learn her death is suspicious; reeling from recent events and with worsening insomnia, Emma is forced to come clean to her husband Robert about her past.

Two women in neighboring apartments become fast friends before becoming sworn enemies; the women enlists their sisters as reinforcements in a war that escalates and ends in horrifically shocking violence.

A violent pedophile escapes during an emergency hospital visit and abducts a girl; Andy faces a serious decision; Chris considers a transfer.

While broadcasting live, a notorious radio-show host holds a prominent politician hostage.

Two women in neighboring apartments become fast friends before becoming sworn enemies; the women enlists their sisters as reinforcements in a war that escalates and ends in horrifically shocking violence.

A violent pedophile escapes during an emergency hospital visit and abducts a girl; Andy faces a serious decision; Chris considers a transfer.

While broadcasting live, a notorious radio-show host holds a prominent politician hostage.

Two women in neighboring apartments become fast friends before becoming sworn enemies; the women enlists their sisters as reinforcements in a war that escalates and ends in horrifically shocking violence.

A violent pedophile escapes during an emergency hospital visit and abducts a girl; Andy faces a serious decision; Chris considers a transfer.

While broadcasting live, a notorious radio-show host holds a prominent politician hostage.

Dr. Marcel and Dr. Manning lay everything on the line to assist a sick woman; Dr. Halstead faces an uphill battle in getting participants involved in his clinical trial; Dr. Choi clashes with a patient who demands absolute perfection of himself.

Dr. Halstead finds continued success in his trial; Dr. Charles' daughter, Anna, receives life-changing news; Noah finds himself in a situation not even April can fix.

Choi helps a patient with chronic pain find a solution; Halstead considers a new path; Charles and Anna bond over a scary situation.

Halstead runs into trouble when one of his trial patients falls ill; his own stress and symptoms have Choi struggling to get through the day.

Choi hires an old Navy colleague to join him in the ED; a final custody hearing threatens to separate Charles and his daughter; Maggie must make a choice that will change Auggie's life.

As Manning deals with her own trauma, she steps in to help a mother in need; Dean continues to stir the pot with more than one doctor; a patient comes to Med needing immediate treatment but doesn't want it from them.

Marcel deals with a patient who ends up having more in common with him than he thinks; Halstead and Choi clash over a pregnant patient with an irregular heartbeat.

Dr. Marcel and Dr. Manning lay everything on the line to assist a sick woman; Dr. Halstead faces an uphill battle in getting participants involved in his clinical trial; Dr. Choi clashes with a patient who demands absolute perfection of himself.

Dr. Halstead finds continued success in his trial; Dr. Charles' daughter, Anna, receives life-changing news; Noah finds himself in a situation not even April can fix.

Choi helps a patient with chronic pain find a solution; Halstead considers a new path; Charles and Anna bond over a scary situation.

Halstead runs into trouble when one of his trial patients falls ill; his own stress and symptoms have Choi struggling to get through the day.

Choi hires an old Navy colleague to join him in the ED; a final custody hearing threatens to separate Charles and his daughter; Maggie must make a choice that will change Auggie's life.

As Manning deals with her own trauma, she steps in to help a mother in need; Dean continues to stir the pot with more than one doctor; a patient comes to Med needing immediate treatment but doesn't want it from them.

Marcel deals with a patient who ends up having more in common with him than he thinks; Halstead and Choi clash over a pregnant patient with an irregular heartbeat.

Dr. Marcel and Dr. Manning lay everything on the line to assist a sick woman; Dr. Halstead faces an uphill battle in getting participants involved in his clinical trial; Dr. Choi clashes with a patient who demands absolute perfection of himself.

A single woman and her daughter are delighted when a single man and his two daughters move in next door; they become fast friends until molestation charges result in anger, accusations and multiple bloody deaths.

Nick and Andy go missing while working under cover to infiltrate a meth pipeline; Swarek and the other officers find themselves in the middle of a rescue operation; Andy works to deal with all the change going on around her.

A wave of terrorist bombs shuts down the city; a member of the team makes a sacrifice.

A single woman and her daughter are delighted when a single man and his two daughters move in next door; they become fast friends until molestation charges result in anger, accusations and multiple bloody deaths.

Nick and Andy go missing while working under cover to infiltrate a meth pipeline; Swarek and the other officers find themselves in the middle of a rescue operation; Andy works to deal with all the change going on around her.

A wave of terrorist bombs shuts down the city; a member of the team makes a sacrifice.

A single woman and her daughter are delighted when a single man and his two daughters move in next door; they become fast friends until molestation charges result in anger, accusations and multiple bloody deaths.

Nick and Andy go missing while working under cover to infiltrate a meth pipeline; Swarek and the other officers find themselves in the middle of a rescue operation; Andy works to deal with all the change going on around her.

A wave of terrorist bombs shuts down the city; a member of the team makes a sacrifice.

A series of ransomware threats leads to emergencies for the 118, including a helicopter crash at a hospital and an air traffic control tower system failure; the case of the realtor serial rapist goes to trial.

The 118 springs into action when a citywide blackout and a record heat wave causes mayhem in Los Angeles; Chimney confides in Hen about Maddie's condition; Athena's worst nightmare comes true.

As the citywide blackout continues to cause mayhem in Los Angeles, Athena races to save her family from a tragedy; Eddie must make a difficult choice about his future; Maddie makes a life-changing decision.

A truck crashes into a high school homecoming parade; Athena and Michael try to help Harry in the aftermath of his kidnapping; May is intimidated by a returning call center legend; Bobby gives a devastated Chimney advice regarding Maddie.

A man over-exerts himself exercising; a groundskeeper is cut by his chainsaw; an explosion occurs at a retirement community; May gets an emergency call from a suicidal teen.

Responding to a fire at a prison, Bobby and the 118 find themselves trapped in a deadly riot.

A man claims he was carjacked, shot and buried alive; a homeowner thinks her roommate is a ghost; Hen receives a visit from the past; Athena and family are concerned that Harry is still haunted by visions of Jeffrey.

A series of ransomware threats leads to emergencies for the 118, including a helicopter crash at a hospital and an air traffic control tower system failure; the case of the realtor serial rapist goes to trial.

The 118 springs into action when a citywide blackout and a record heat wave causes mayhem in Los Angeles; Chimney confides in Hen about Maddie's condition; Athena's worst nightmare comes true.

As the citywide blackout continues to cause mayhem in Los Angeles, Athena races to save her family from a tragedy; Eddie must make a difficult choice about his future; Maddie makes a life-changing decision.

A truck crashes into a high school homecoming parade; Athena and Michael try to help Harry in the aftermath of his kidnapping; May is intimidated by a returning call center legend; Bobby gives a devastated Chimney advice regarding Maddie.

A man over-exerts himself exercising; a groundskeeper is cut by his chainsaw; an explosion occurs at a retirement community; May gets an emergency call from a suicidal teen.

Responding to a fire at a prison, Bobby and the 118 find themselves trapped in a deadly riot.

A man claims he was carjacked, shot and buried alive; a homeowner thinks her roommate is a ghost; Hen receives a visit from the past; Athena and family are concerned that Harry is still haunted by visions of Jeffrey.

A series of ransomware threats leads to emergencies for the 118, including a helicopter crash at a hospital and an air traffic control tower system failure; the case of the realtor serial rapist goes to trial.

Realizing a long-held dream, a Michigan couple relocates to Florida, then their life in the sun is destroyed after they get into a fatal conflict with their neighbor.

On her first day back, Andy is forced to work a bank robbery case with newly promoted Swarek; a distraught woman gives Nick perspective on his life with Gail; a bombshell is dropped on Noelle.

A delusional man kidnaps a waitress who resembles his missing daughter; a woman joins the SRU team after the death of one of the unit's members.

Realizing a long-held dream, a Michigan couple relocates to Florida, then their life in the sun is destroyed after they get into a fatal conflict with their neighbor.

On her first day back, Andy is forced to work a bank robbery case with newly promoted Swarek; a distraught woman gives Nick perspective on his life with Gail; a bombshell is dropped on Noelle.

A delusional man kidnaps a waitress who resembles his missing daughter; a woman joins the SRU team after the death of one of the unit's members.

Realizing a long-held dream, a Michigan couple relocates to Florida, then their life in the sun is destroyed after they get into a fatal conflict with their neighbor.

On her first day back, Andy is forced to work a bank robbery case with newly promoted Swarek; a distraught woman gives Nick perspective on his life with Gail; a bombshell is dropped on Noelle.

A delusional man kidnaps a waitress who resembles his missing daughter; a woman joins the SRU team after the death of one of the unit's members.

Choi teams up with an unexpected person to treat a famous tennis player who is afraid his career might be over; Goodwin's new protocols cause a stir.

Archer and Choi respond to a scene that brings back some bad memories; when Carol's condition worsens, Manning is willing to do whatever it takes to get her mom feeling better.

An auto accident sends Goodwin into a spiral as she tries to help a young boy and his mother; Manning's secretive behavior begins to draw the attention of Marcel and Halstead.

Third-year med students begin their rotation in the ED, and Maggie keeps a careful eye on one of them; Manning, whose mom's health takes another decline, tries to cover up how she broke the rules to treat her.

Marcel worries he made a surgical error when a recent transplant patient comes in with complications; Carol is once again in distress; Halstead and Manning must take action to right their wrong.

Carol receives a second chance at life when a new heart becomes available; Choi and Archer find themselves in hot water with an old patient; Halstead faces the consequences of the stolen trial medication.

An elevated train crash interrupts the grand opening of the emergency department when an influx of crash victims arrive at Chicago Med.

Choi teams up with an unexpected person to treat a famous tennis player who is afraid his career might be over; Goodwin's new protocols cause a stir.

Archer and Choi respond to a scene that brings back some bad memories; when Carol's condition worsens, Manning is willing to do whatever it takes to get her mom feeling better.

An auto accident sends Goodwin into a spiral as she tries to help a young boy and his mother; Manning's secretive behavior begins to draw the attention of Marcel and Halstead.

Third-year med students begin their rotation in the ED, and Maggie keeps a careful eye on one of them; Manning, whose mom's health takes another decline, tries to cover up how she broke the rules to treat her.

Marcel worries he made a surgical error when a recent transplant patient comes in with complications; Carol is once again in distress; Halstead and Manning must take action to right their wrong.

Carol receives a second chance at life when a new heart becomes available; Choi and Archer find themselves in hot water with an old patient; Halstead faces the consequences of the stolen trial medication.

An elevated train crash interrupts the grand opening of the emergency department when an influx of crash victims arrive at Chicago Med.

Choi teams up with an unexpected person to treat a famous tennis player who is afraid his career might be over; Goodwin's new protocols cause a stir.

A man who is meticulous about his lawn bickers with a new neighbor who doesn't have the same priorities; the feud between the two men escalates, ultimately ending in an episode of shocking violence.

Andy and Officer Cruz butt heads when a disturbed woman forces them to make a crucial decision; an armed burglar is sought after a string of ATM robberies; Dov and Chloe have to work together.

Two civilians are trapped inside a prison when a riot breaks out.

A man who is meticulous about his lawn bickers with a new neighbor who doesn't have the same priorities; the feud between the two men escalates, ultimately ending in an episode of shocking violence.

Andy and Officer Cruz butt heads when a disturbed woman forces them to make a crucial decision; an armed burglar is sought after a string of ATM robberies; Dov and Chloe have to work together.

Two civilians are trapped inside a prison when a riot breaks out.

A man who is meticulous about his lawn bickers with a new neighbor who doesn't have the same priorities; the feud between the two men escalates, ultimately ending in an episode of shocking violence.

Andy and Officer Cruz butt heads when a disturbed woman forces them to make a crucial decision; an armed burglar is sought after a string of ATM robberies; Dov and Chloe have to work together.

Two civilians are trapped inside a prison when a riot breaks out.

A shocking murder pulls rookie officer Dante Torres into his own neighborhood; as Voight and Atwater help him navigate the case and manage tricky personal dynamics with wary neighbors, Torres realizes his life may be forever changed.

Upton's dogged pursuit of a missing teenage girl leads the team into a dark web of human trafficking; chief O'Neal becomes involved with the unit's investigation when it becomes evident his son, Sean, has a connection to the missing girl.

Atwater's reactions during a tense arrest are called into question; the team must dig in to uncover key evidence that could aid in the ongoing investigation and clear Atwater's name.

When actionable evidence finally surfaces against Sean O'Neal, Upton and the team work relentlessly to build a case in secret; they discover Sean is more elusive and dangerous than anticipated.

To distract Intelligence from the investigation into his son, Chief O'Neal forces the team to handle a "dead fish" case; when that dead fish turns into a complicated heater case, Burgess is thrown back into difficult memories from her past.

After a shocking discovery, the team begins closing in on Sean O'Neal with every shred of evidence they can find; determined to keep his son out of prison, Chief O'Neal hires a lawyer.

A series of brutal home invasion robberies finds the team paired with Detective Borkowski, an old friend of Ruzek's, to work the case; things get complicated for Torres when it becomes clear Borkowski has a vastly different policing style.

A shocking murder pulls rookie officer Dante Torres into his own neighborhood; as Voight and Atwater help him navigate the case and manage tricky personal dynamics with wary neighbors, Torres realizes his life may be forever changed.

Upton's dogged pursuit of a missing teenage girl leads the team into a dark web of human trafficking; chief O'Neal becomes involved with the unit's investigation when it becomes evident his son, Sean, has a connection to the missing girl.

Atwater's reactions during a tense arrest are called into question; the team must dig in to uncover key evidence that could aid in the ongoing investigation and clear Atwater's name.

When actionable evidence finally surfaces against Sean O'Neal, Upton and the team work relentlessly to build a case in secret; they discover Sean is more elusive and dangerous than anticipated.

To distract Intelligence from the investigation into his son, Chief O'Neal forces the team to handle a "dead fish" case; when that dead fish turns into a complicated heater case, Burgess is thrown back into difficult memories from her past.

After a shocking discovery, the team begins closing in on Sean O'Neal with every shred of evidence they can find; determined to keep his son out of prison, Chief O'Neal hires a lawyer.

A series of brutal home invasion robberies finds the team paired with Detective Borkowski, an old friend of Ruzek's, to work the case; things get complicated for Torres when it becomes clear Borkowski has a vastly different policing style.

A shocking murder pulls rookie officer Dante Torres into his own neighborhood; as Voight and Atwater help him navigate the case and manage tricky personal dynamics with wary neighbors, Torres realizes his life may be forever changed.

Officials look to state-of-the-art DNA analysis to help capture a serial killer in the Louisiana State University area of Baton Rouge.

Investigating a series of fires in California's Sam Joaquin Valley that killed four, investigators determine a respected arson investigator may be the arsonist.

Investigators work to solve a double homicide in the small town of Hudson, Wisc.

A shocking ambush at a funeral leads the team into a heated investigation to find the shooters; much to Atwater's surprise, he must rely on someone from his past to help in the investigation, dredging up old memories and revealing new truths.

Sean O'Neal surprises Upton with a call from prison, revealing sensitive information; while Upton grapples with how to keep O'Neal at a distance, the team quickly mobilizes to stop a crime in progress before it's too late.

Voight and the team help ASA Nina Chapman pursue a drug runner who dodged prison years ago after Chapman's informant mysteriously disappeared; the investigation takes a turn when Voight uncovers a damaging secret from Chapman's past.

After a brutal shooting, Burgess and Ruzek find themselves trapped aboard the busy "L" subway; as they piece together scant evidence, the team is drawn into a dark family drama; Burgess' proximity to the shooting triggers harsh memories.

When a family is poisoned in their home, the team discovers a connection to the Becks; Ruzek goes undercover to work for their business, and as he gets closer to Samantha, chilling information about her father, Richard, comes to light.

Voight takes the stand in a high-stakes murder trial against notorious drug kingpin Arturo Morales; when it becomes clear that Morales and his henchmen have compromised a juror, Voight and the team work furiously to ensure justice prevails.

As the team investigates a convenience store robbery, the evidence leads them to an unusual pair of suspects, revealing a dark personal drama and another potential victim; Burgess slowly makes strides tackling her past trauma.

A shocking ambush at a funeral leads the team into a heated investigation to find the shooters; much to Atwater's surprise, he must rely on someone from his past to help in the investigation, dredging up old memories and revealing new truths.

Sean O'Neal surprises Upton with a call from prison, revealing sensitive information; while Upton grapples with how to keep O'Neal at a distance, the team quickly mobilizes to stop a crime in progress before it's too late.

Voight and the team help ASA Nina Chapman pursue a drug runner who dodged prison years ago after Chapman's informant mysteriously disappeared; the investigation takes a turn when Voight uncovers a damaging secret from Chapman's past.

After a brutal shooting, Burgess and Ruzek find themselves trapped aboard the busy "L" subway; as they piece together scant evidence, the team is drawn into a dark family drama; Burgess' proximity to the shooting triggers harsh memories.