Firehouse 51 deals with the aftermath of the capsized boat rescue; Gallo, Ritter and Violet discuss plans for a side gig.

A video of Casey from the roof rescue goes viral; Mouch sets up a Little Free Library at Firehouse 51; Herrmann breaks protocol.

Arriving in Albania, the unlikely group heads in search of Julie's old handler, Damian, but Julie is distracted by her suspicions that Edward is hiding something from her.

A mysterious caller who is in danger relies on Kidd to help save her and her brother; the firehouse helps Cruz get ready for fatherhood.

Differences over how to enjoy life in a rural neighborhood quickly escalate into a feud that comes to a bloody end on the road where it began.

Sophisticated crime fighters map the psychological and physical terrain of multiple murderers.

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.

Differences over how to enjoy life in a rural neighborhood quickly escalate into a feud that comes to a bloody end on the road where it began.

Sophisticated crime fighters map the psychological and physical terrain of multiple murderers.

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.

Differences over how to enjoy life in a rural neighborhood quickly escalate into a feud that comes to a bloody end on the road where it began.

Sophisticated crime fighters map the psychological and physical terrain of multiple murderers.

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.

Dr. Charles and Dr. Manning treat a patient who is fully invested in pretending to be someone other than himself; Noah doubts his abilities as a doctor; Dr. Marcel and Dr. Choi face a tough ethical decision; Dr. Halstead puts his faith in an addict.

A convicted murderer's escape hits close to home when several team members end up in danger; Dr. Charles and Dr. Halstead clash over patient treatment plans; Dr. Choi and April discover the truth about a patient's scam; Maggie receives good news.

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.

Dr. Charles and Dr. Manning treat a patient who is fully invested in pretending to be someone other than himself; Noah doubts his abilities as a doctor; Dr. Marcel and Dr. Choi face a tough ethical decision; Dr. Halstead puts his faith in an addict.

A convicted murderer's escape hits close to home when several team members end up in danger; Dr. Charles and Dr. Halstead clash over patient treatment plans; Dr. Choi and April discover the truth about a patient's scam; Maggie receives good news.

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.

Dr. Charles and Dr. Manning treat a patient who is fully invested in pretending to be someone other than himself; Noah doubts his abilities as a doctor; Dr. Marcel and Dr. Choi face a tough ethical decision; Dr. Halstead puts his faith in an addict.

New neighbors disrupt the harmony that has existed between residents for years; alliances change and terror reigns until a winter storm puts a bloody end to the feud.

Criminals are betrayed by the clues their own bodies leave behind.

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

New neighbors disrupt the harmony that has existed between residents for years; alliances change and terror reigns until a winter storm puts a bloody end to the feud.

Criminals are betrayed by the clues their own bodies leave behind.

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

New neighbors disrupt the harmony that has existed between residents for years; alliances change and terror reigns until a winter storm puts a bloody end to the feud.

Criminals are betrayed by the clues their own bodies leave behind.

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

Chimney is determined to find a missing Maddie amongst the chaos of St. Patrick's Day.

Athena investigates a robbery at a gas station; Bobby and the 126 race to rescue a novice diver who panics while in a shark cage; Eddie reaches his breaking point; Maddie shares some news with Buck, who realizes he has to come clean with Taylor.

The members of the 118 race into action when a women falls over her balcony; Athena investigates when a bike rider is impaled on a stop sign; Eddie begins his therapy for his PTSD and survivor's guilt; Maddie fears the worst when Jee-Yun falls ill.

A social media influencer has an accident in a sauna; an emergency at a reality show wedding; a tragedy when a mother and her daughter go hiking; Maddie worries she has missed too many firsts with Jee-Yun.

The 118 races to the rescue when the call center goes up in flames; Bobby risks his life to save a trapped May and Claudette; Buck and Eddie must help an injured electrician; Chimney and his brother team up as firefighters for the first time.

After a mysterious death, Hen and Chimney put their lives in danger when they suspect that someone is playing God to make themselves look like a hero; Eddie visits Texas, where he attempts to reconcile with his father.

Members of the 118 attempt to rescue a wellness retreat guru after his followers turn on him; an emergency call at an upscale hair salon; Maddie contemplates returning to work, Eddie and May make decisions about their future.

Chimney is determined to find a missing Maddie amongst the chaos of St. Patrick's Day.

Athena investigates a robbery at a gas station; Bobby and the 126 race to rescue a novice diver who panics while in a shark cage; Eddie reaches his breaking point; Maddie shares some news with Buck, who realizes he has to come clean with Taylor.

The members of the 118 race into action when a women falls over her balcony; Athena investigates when a bike rider is impaled on a stop sign; Eddie begins his therapy for his PTSD and survivor's guilt; Maddie fears the worst when Jee-Yun falls ill.

A social media influencer has an accident in a sauna; an emergency at a reality show wedding; a tragedy when a mother and her daughter go hiking; Maddie worries she has missed too many firsts with Jee-Yun.

The 118 races to the rescue when the call center goes up in flames; Bobby risks his life to save a trapped May and Claudette; Buck and Eddie must help an injured electrician; Chimney and his brother team up as firefighters for the first time.

After a mysterious death, Hen and Chimney put their lives in danger when they suspect that someone is playing God to make themselves look like a hero; Eddie visits Texas, where he attempts to reconcile with his father.

Members of the 118 attempt to rescue a wellness retreat guru after his followers turn on him; an emergency call at an upscale hair salon; Maddie contemplates returning to work, Eddie and May make decisions about their future.

Chimney is determined to find a missing Maddie amongst the chaos of St. Patrick's Day.

Neighbors take sides after someone decides to build a dream home on their quiet street; longtime friends turn into hardcore enemies and death is right around the corner.

Using technology to solve crime.

A woman kidnaps her two children to keep her husband from getting custody.

Neighbors take sides after someone decides to build a dream home on their quiet street; longtime friends turn into hardcore enemies and death is right around the corner.

Using technology to solve crime.

A woman kidnaps her two children to keep her husband from getting custody.

Neighbors take sides after someone decides to build a dream home on their quiet street; longtime friends turn into hardcore enemies and death is right around the corner.

Using technology to solve crime.

A woman kidnaps her two children to keep her husband from getting custody.

Connor, who is in hot water with the hospital's Oversight Committee, handles a gunshot victim who has unexpected ties to Halstead; Maggie feels guilty about the return of a former patient; Charles has an awkward first date.

After witnessing a pickup truck plow through a street fair, Natalie and Maggie must make tough decisions on the fly; at the hospital, doctors and nurses are on high alert with the influx of patients; Dr. Charles' ex-wife comes to town with news.

Halstead treats a woman on the verge of freezing to death; Dr. Charles' ex-wife receives some concerning news; Choi handles a lymphoma patient with viral meningitis and a complicated family; Manning makes a house call.

When a car unexpectedly smashes through the ambulance bay doors, Dr. Choi makes some difficult decisions in an effort to save a worker trapped beneath the wreckage and April, who's also in danger.

An alarming phone call prompts Rhodes to rush out of an important surgery; Halstead comes to the aid of an FBI agent who is brought into the ED; Manning and Choi find themselves on opposite sides of a disagreement over doctor-patient confidentiality.

The hospital goes into lockdown mode when a man with a gun holds medical staff hostage; Goodwin is forced to make a tough decision; Dr. Rhodes begins to realize his time with his father is getting short.

Connor, who is in hot water with the hospital's Oversight Committee, handles a gunshot victim who has unexpected ties to Halstead; Maggie feels guilty about the return of a former patient; Charles has an awkward first date.

The designers head back to school where they must create fashionable looks using unconventional materials before facing a shocking twist at the elimination.

After witnessing a pickup truck plow through a street fair, Natalie and Maggie must make tough decisions on the fly; at the hospital, doctors and nurses are on high alert with the influx of patients; Dr. Charles' ex-wife comes to town with news.

Halstead treats a woman on the verge of freezing to death; Dr. Charles' ex-wife receives some concerning news; Choi handles a lymphoma patient with viral meningitis and a complicated family; Manning makes a house call.

When a car unexpectedly smashes through the ambulance bay doors, Dr. Choi makes some difficult decisions in an effort to save a worker trapped beneath the wreckage and April, who's also in danger.

An alarming phone call prompts Rhodes to rush out of an important surgery; Halstead comes to the aid of an FBI agent who is brought into the ED; Manning and Choi find themselves on opposite sides of a disagreement over doctor-patient confidentiality.

The hospital goes into lockdown mode when a man with a gun holds medical staff hostage; Goodwin is forced to make a tough decision; Dr. Rhodes begins to realize his time with his father is getting short.

Connor, who is in hot water with the hospital's Oversight Committee, handles a gunshot victim who has unexpected ties to Halstead; Maggie feels guilty about the return of a former patient; Charles has an awkward first date.

The designers head back to school where they must create fashionable looks using unconventional materials before facing a shocking twist at the elimination.

In a tight-knit community, a new family commits a slight against a community member causing all of their neighbors to turn against them and leading to an explosive conclusion.

Murder weapons often hold several critical forensic clues about the crime.

The SRU team is called in when a woman takes hostages at a gas station.

In a tight-knit community, a new family commits a slight against a community member causing all of their neighbors to turn against them and leading to an explosive conclusion.

Murder weapons often hold several critical forensic clues about the crime.

The SRU team is called in when a woman takes hostages at a gas station.

In a tight-knit community, a new family commits a slight against a community member causing all of their neighbors to turn against them and leading to an explosive conclusion.

Murder weapons often hold several critical forensic clues about the crime.

The SRU team is called in when a woman takes hostages at a gas station.

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.

General Gregor retrieves the Sword of Mars and uses it to take over the country of Caucasylvia, gaining control of their nuclear arsenal; the team must steal the Sword to prevent world calamity.

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.

Air authorities search desperately for the plane and federal agencies spring into action; as the group becomes smaller and smaller, the last survivors know they are going to have to fight to stay alive.

As his dependency on prescription painkillers grows, Antonio crosses a line, endangering someone close to him and ultimately putting the entire team at risk.

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.

General Gregor retrieves the Sword of Mars and uses it to take over the country of Caucasylvia, gaining control of their nuclear arsenal; the team must steal the Sword to prevent world calamity.

The stakes become personal for Atwater during Intelligence's investigation of a drug dealer suspected of homicide.

Air authorities search desperately for the plane and federal agencies spring into action; as the group becomes smaller and smaller, the last survivors know they are going to have to fight to stay alive.

Police search for the killer of an elderly upscale Toronto couple.

The largest police investigation of the decade lasted 23 days to catch a sniper who terrorized Washington, D. C. residents.

When an unidentified burned corpse is found in a field, state-of-the-art forensics is turned to.

When a blimp suffers mechanical failure and its engine catches fire, Athena and the 118 must rescue victims both inside and outside a packed sports stadium; Bobby and Athena drop off May on her first day of college and discuss honeymoon plans.

The 118 race to the rescue when a structure collapses at a convention; Athena's father suffers a stroke; Hen stretches herself too thin with test prep and her new responsibilities at the 118; Maddie tries to help new recruit get his bearings.

While in Florida caring for her ailing father, Athena and Bobby investigate the disappearance of her childhood friend from 45 years ago.

The 118 races to the rescue when a birdwatcher is trapped under a tree; Chimney is in for a wild ride when he tends to a drunken driver; Maddie helps a mother and her young daughter when an abusive father shows up at the their house.

Athena investigates when the same house is hit with two home invasion 911 calls within hours of each other; the 118 race to the rescue when a man is trapped in an attic; Hen asks for a second chance with her medical school professor.

Hen fears for Karen's life when an explosion rocks her science lab on the day she brings Denny to work with her.

Athena and the 118 race to the rescue when a fading movie star is plagued by a series of near-death experiences.

When a blimp suffers mechanical failure and its engine catches fire, Athena and the 118 must rescue victims both inside and outside a packed sports stadium; Bobby and Athena drop off May on her first day of college and discuss honeymoon plans.

The 118 race to the rescue when a structure collapses at a convention; Athena's father suffers a stroke; Hen stretches herself too thin with test prep and her new responsibilities at the 118; Maddie tries to help new recruit get his bearings.

While in Florida caring for her ailing father, Athena and Bobby investigate the disappearance of her childhood friend from 45 years ago.

The 118 races to the rescue when a birdwatcher is trapped under a tree; Chimney is in for a wild ride when he tends to a drunken driver; Maddie helps a mother and her young daughter when an abusive father shows up at the their house.

Athena investigates when the same house is hit with two home invasion 911 calls within hours of each other; the 118 race to the rescue when a man is trapped in an attic; Hen asks for a second chance with her medical school professor.

Hen fears for Karen's life when an explosion rocks her science lab on the day she brings Denny to work with her.

Athena and the 118 race to the rescue when a fading movie star is plagued by a series of near-death experiences.

When a blimp suffers mechanical failure and its engine catches fire, Athena and the 118 must rescue victims both inside and outside a packed sports stadium; Bobby and Athena drop off May on her first day of college and discuss honeymoon plans.

The 118 race to the rescue when a structure collapses at a convention; Athena's father suffers a stroke; Hen stretches herself too thin with test prep and her new responsibilities at the 118; Maddie tries to help new recruit get his bearings.

While in Florida caring for her ailing father, Athena and Bobby investigate the disappearance of her childhood friend from 45 years ago.

The 118 races to the rescue when a birdwatcher is trapped under a tree; Chimney is in for a wild ride when he tends to a drunken driver; Maddie helps a mother and her young daughter when an abusive father shows up at the their house.

Athena investigates when the same house is hit with two home invasion 911 calls within hours of each other; the 118 race to the rescue when a man is trapped in an attic; Hen asks for a second chance with her medical school professor.

Hen fears for Karen's life when an explosion rocks her science lab on the day she brings Denny to work with her.

Athena and the 118 race to the rescue when a fading movie star is plagued by a series of near-death experiences.

A massive earthquake rocks the city and throws everything into chaos; Russo recommends Officer Nolan for a protective detail of Brad Hayes, a man whose dealings have put a target on his head.

When a cop is arrested by Internal Affairs for lying on the witness stand, it leads to the release of three felons whose cases he worked on; Officer Nolan finds out he is being sued by a man who claims he used excessive force which led to an injury.

Sgt. Gray informs the rookies that they must track down a specific set of crimes in a 48-hour period to qualify for their final exam; Nolan and Bishop answer a silent alarm call at will.i.am's house.

As the rookies prepare for a big exam to see who moves on to the next stage of training, Nolan and Bishop are called to the scene of a murder and learn that the victim may be tied to a potential terrorist attack on the city of Los Angeles.

The officers grapple with the aftermath of a plotted attack on the city of Los Angeles, leaving Bradford fighting for his life.

Nolan teams up with new night detective Pablo Armstrong for a murder investigation case that results in an unexpected reunion with a former love interest.

Officer Nolan navigates his relationship with Jessica and a developing rapport with Grace while working a high-stakes criminal case involving an undercover homeland security agent; Officer Chen meddles with Officer Bradford's love life.

Officer Nolan gets off to a rocky start after being introduced to his new training officer; Officer Bradford struggles to think of an appropriate birthday gift for Rachel; Officer Lopez finds herself navigating a case that triggers a personal memory.

A massive earthquake rocks the city and throws everything into chaos; Russo recommends Officer Nolan for a protective detail of Brad Hayes, a man whose dealings have put a target on his head.

When a cop is arrested by Internal Affairs for lying on the witness stand, it leads to the release of three felons whose cases he worked on; Officer Nolan finds out he is being sued by a man who claims he used excessive force which led to an injury.

Sgt. Gray informs the rookies that they must track down a specific set of crimes in a 48-hour period to qualify for their final exam; Nolan and Bishop answer a silent alarm call at will.i.am's house.

As the rookies prepare for a big exam to see who moves on to the next stage of training, Nolan and Bishop are called to the scene of a murder and learn that the victim may be tied to a potential terrorist attack on the city of Los Angeles.

The officers grapple with the aftermath of a plotted attack on the city of Los Angeles, leaving Bradford fighting for his life.

Nolan teams up with new night detective Pablo Armstrong for a murder investigation case that results in an unexpected reunion with a former love interest.

Officer Nolan navigates his relationship with Jessica and a developing rapport with Grace while working a high-stakes criminal case involving an undercover homeland security agent; Officer Chen meddles with Officer Bradford's love life.

Officer Nolan gets off to a rocky start after being introduced to his new training officer; Officer Bradford struggles to think of an appropriate birthday gift for Rachel; Officer Lopez finds herself navigating a case that triggers a personal memory.

A massive earthquake rocks the city and throws everything into chaos; Russo recommends Officer Nolan for a protective detail of Brad Hayes, a man whose dealings have put a target on his head.

When a cop is arrested by Internal Affairs for lying on the witness stand, it leads to the release of three felons whose cases he worked on; Officer Nolan finds out he is being sued by a man who claims he used excessive force which led to an injury.

Sgt. Gray informs the rookies that they must track down a specific set of crimes in a 48-hour period to qualify for their final exam; Nolan and Bishop answer a silent alarm call at will.i.am's house.

As the rookies prepare for a big exam to see who moves on to the next stage of training, Nolan and Bishop are called to the scene of a murder and learn that the victim may be tied to a potential terrorist attack on the city of Los Angeles.

The officers grapple with the aftermath of a plotted attack on the city of Los Angeles, leaving Bradford fighting for his life.

Nolan teams up with new night detective Pablo Armstrong for a murder investigation case that results in an unexpected reunion with a former love interest.

Officer Nolan navigates his relationship with Jessica and a developing rapport with Grace while working a high-stakes criminal case involving an undercover homeland security agent; Officer Chen meddles with Officer Bradford's love life.

Officer Nolan gets off to a rocky start after being introduced to his new training officer; Officer Bradford struggles to think of an appropriate birthday gift for Rachel; Officer Lopez finds herself navigating a case that triggers a personal memory.

Mixing business with pleasure spells murder for neighboring best friends.

Killers attempt to use the elements to cover their crimes.

Meth dealers take Parker hostage when they mistake him for somebody else.

Mixing business with pleasure spells murder for neighboring best friends.

Killers attempt to use the elements to cover their crimes.

Meth dealers take Parker hostage when they mistake him for somebody else.

Mixing business with pleasure spells murder for neighboring best friends.

Killers attempt to use the elements to cover their crimes.

Meth dealers take Parker hostage when they mistake him for somebody else.

Griffin learns the truth about his father's death and reveals why he really came to visit Casey; Gallo, Ritter and Violet take steps to expand their microbrewery business.

Kidd spreads her wings as a lieutenant; Chief Hawkins rides with Ambulance 61 to learn more about Brett; Casey takes a trip out of town; a Ritter date night turns into an emergency situation.

Casey makes a life-altering decision; Gallo, Ritter and Violet agree to an interview and photo shoot; Brett and Mouch launch the paramedicine program; Cruz comes closer to fatherhood.

A major security breach in the city's computer networks forces Firehouse 51's senior leaders to take matters into their own hands; Severide gears up for an arson investigation.

Gallo clashes with the new lieutenant temporarily filling in for Casey; Severide closes in on a dangerous and deadly arsonist.

Severide and Herrmann clash over office space; Boden looks at Pelham's past as he considers making him permanent; Gallo's resentment of Pelham comes to a head; Brett and Ritter force Violet to confront her true feelings for Gallo.

Across Europe, news breaks about the tragedy Julie and Edward witnessed on the island and they become the targets of a police manhunt.

Griffin learns the truth about his father's death and reveals why he really came to visit Casey; Gallo, Ritter and Violet take steps to expand their microbrewery business.

Kidd spreads her wings as a lieutenant; Chief Hawkins rides with Ambulance 61 to learn more about Brett; Casey takes a trip out of town; a Ritter date night turns into an emergency situation.

Casey makes a life-altering decision; Gallo, Ritter and Violet agree to an interview and photo shoot; Brett and Mouch launch the paramedicine program; Cruz comes closer to fatherhood.

A major security breach in the city's computer networks forces Firehouse 51's senior leaders to take matters into their own hands; Severide gears up for an arson investigation.

Gallo clashes with the new lieutenant temporarily filling in for Casey; Severide closes in on a dangerous and deadly arsonist.

Severide and Herrmann clash over office space; Boden looks at Pelham's past as he considers making him permanent; Gallo's resentment of Pelham comes to a head; Brett and Ritter force Violet to confront her true feelings for Gallo.

Across Europe, news breaks about the tragedy Julie and Edward witnessed on the island and they become the targets of a police manhunt.

Griffin learns the truth about his father's death and reveals why he really came to visit Casey; Gallo, Ritter and Violet take steps to expand their microbrewery business.

On a quiet cul de sac, a contractor helps his neighbor rent the home beside him; unwittingly trapping himself between an increasingly unhinged presence on one side and the man's hostile parents on the other.

In fall 1991, Toronto was paralyzed by the story of a missing six-year-old girl found raped and murdered in the boiler room of her apartment building; with four suspects, CSIs turned to the brand-new science of DNA to catch the killer.

The team questions a man's motives when he violently counters drug dealers vandalizing the bar he patronizes.

On a quiet cul de sac, a contractor helps his neighbor rent the home beside him; unwittingly trapping himself between an increasingly unhinged presence on one side and the man's hostile parents on the other.

In fall 1991, Toronto was paralyzed by the story of a missing six-year-old girl found raped and murdered in the boiler room of her apartment building; with four suspects, CSIs turned to the brand-new science of DNA to catch the killer.

The team questions a man's motives when he violently counters drug dealers vandalizing the bar he patronizes.

On a quiet cul de sac, a contractor helps his neighbor rent the home beside him; unwittingly trapping himself between an increasingly unhinged presence on one side and the man's hostile parents on the other.

In fall 1991, Toronto was paralyzed by the story of a missing six-year-old girl found raped and murdered in the boiler room of her apartment building; with four suspects, CSIs turned to the brand-new science of DNA to catch the killer.

The team questions a man's motives when he violently counters drug dealers vandalizing the bar he patronizes.

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. 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.

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. 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.

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.

In Harlem, N.Y., a couple discovers it's not better to have the upstairs apartment.

In 1988, motorists discover human body parts dumped along the highway.

A highly trained sniper booby-traps an arena that is slated to be destroyed.

In Harlem, N.Y., a couple discovers it's not better to have the upstairs apartment.

In 1988, motorists discover human body parts dumped along the highway.

A highly trained sniper booby-traps an arena that is slated to be destroyed.

In Harlem, N.Y., a couple discovers it's not better to have the upstairs apartment.

In 1988, motorists discover human body parts dumped along the highway.

A highly trained sniper booby-traps an arena that is slated to be destroyed.

The 118 race to the rescue to a renaissance faire; an overbearing boss is poisoned; Athena fears for May's life when she encounters a disturbed young man; Uncle Buck babysits young Jee-Yun as Maddie and Chimney begin house-hunting.

The Santa Ana winds bring in a variety of weirder-than-usual emergencies; a family dog retrieves a severed hand; a young woman sleep-drives into the station; Denny questions Hen and Karen about his biological parents.

A dry thunderstorm rolls over Los Angeles, bringing in a series of lightning strike emergencies for the 118 and leaves a first responder's life hanging in the balance; Chimney get a surprise from a visiting Albert.

As Buck's life hangs in the balance, he dreams of a world where he never became a firefighter, for better and worse.

Despite the case being closed, Bobby is determined to prove his Alcoholics Anonymous sponsor was murdered and bring his killer to justice; Buck struggles with his post-traumatic stress.

The 118 faces emergencies at a spin class and a hair salon; a husband and wife find themselves in a compromising position; Buck discovers new cognitive abilities; Hen and Karen find out Denny has been seeing his biological father.

The 118 race to emergencies at a commercial bakery and a bodybuilding competition; Bobby's annual performance reviews send Chimney to the firefighter academy, where he runs into a familiar face; Eddie's aunt gets involved in his personal life.

The 118 race to the rescue to a renaissance faire; an overbearing boss is poisoned; Athena fears for May's life when she encounters a disturbed young man; Uncle Buck babysits young Jee-Yun as Maddie and Chimney begin house-hunting.

The Santa Ana winds bring in a variety of weirder-than-usual emergencies; a family dog retrieves a severed hand; a young woman sleep-drives into the station; Denny questions Hen and Karen about his biological parents.

A dry thunderstorm rolls over Los Angeles, bringing in a series of lightning strike emergencies for the 118 and leaves a first responder's life hanging in the balance; Chimney get a surprise from a visiting Albert.

As Buck's life hangs in the balance, he dreams of a world where he never became a firefighter, for better and worse.

Despite the case being closed, Bobby is determined to prove his Alcoholics Anonymous sponsor was murdered and bring his killer to justice; Buck struggles with his post-traumatic stress.

The 118 faces emergencies at a spin class and a hair salon; a husband and wife find themselves in a compromising position; Buck discovers new cognitive abilities; Hen and Karen find out Denny has been seeing his biological father.

The 118 race to emergencies at a commercial bakery and a bodybuilding competition; Bobby's annual performance reviews send Chimney to the firefighter academy, where he runs into a familiar face; Eddie's aunt gets involved in his personal life.

The 118 race to the rescue to a renaissance faire; an overbearing boss is poisoned; Athena fears for May's life when she encounters a disturbed young man; Uncle Buck babysits young Jee-Yun as Maddie and Chimney begin house-hunting.

The building of a backyard shed destroys a yearslong, close relationship between two neighbors and ignites a vicious conflict that sees property destroyed, pets killed, and finally two people shot to death in cold blood.

In 1990, Gainesville, Fla., becomes the site of a number of coed murders.

When a young man is held captive by a carjacker, the team must figure out how to get in without hurting the baby in the car.

The building of a backyard shed destroys a yearslong, close relationship between two neighbors and ignites a vicious conflict that sees property destroyed, pets killed, and finally two people shot to death in cold blood.

In 1990, Gainesville, Fla., becomes the site of a number of coed murders.

When a young man is held captive by a carjacker, the team must figure out how to get in without hurting the baby in the car.

The building of a backyard shed destroys a yearslong, close relationship between two neighbors and ignites a vicious conflict that sees property destroyed, pets killed, and finally two people shot to death in cold blood.

In 1990, Gainesville, Fla., becomes the site of a number of coed murders.

When a young man is held captive by a carjacker, the team must figure out how to get in without hurting the baby in the car.

Dr. Manning's actions with a patient lead to serious repercussions; April and Noah disagree over a patient who is injured after a beating; Dr. Charles is visited by a childhood friend.

Dr. Charles and Dr. Halstead sink their teeth into a case; Dr. Marcel and Maggie throw a traditional crawfish boil for the staff; a new relationship blossoms while another is left on rocky ground.

Maggie gets unsettling news about a new friend and breaks protocol to support him; one of the doctors from the Med family is rushed into emergency surgery after a violent assault; a social media influencer lets his users vote on medical advice.

April receives unfortunate news that makes her question her future with Ethan; Dr. Charles and Maggie see tough times on the horizon; Natalie's memory from the accident starts to return.

Dr. Halstead's world is thrown into turmoil when a former patient resurfaces; April has a secret she considers confessing to Ethan; Dr. Charles tries to maintain his focus during a difficult time.