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.

After a major accident at O'Hare International Airport, the E.D. is concerned one of their own is in mortal danger; Will's proposal for a safe injection site goes to the board for consideration; Natalie and Goodwin become concerned for Gwen.

It's finale day and the three finalists unveil their collections which showcase their unique vision and artistry; with ten models each and $100,000 on the line, every detail matters; guest judge Jason Wu returns as the judges make their final decision and crown the winner.

In Tamarac, Fla., a new boy becomes friends with the most unruly youngsters in his neighborhood, leading to bad blood that boils over on Halloween and comes to a horrific end.

Homicide investigators are convinced an apparent murder-suicide was staged but the experienced CSI on the scene disagrees; only the instincts of the cops, coupled with an outside forensic expert's opinion, convince authorities who the real killer is.

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

In Tamarac, Fla., a new boy becomes friends with the most unruly youngsters in his neighborhood, leading to bad blood that boils over on Halloween and comes to a horrific end.

Homicide investigators are convinced an apparent murder-suicide was staged but the experienced CSI on the scene disagrees; only the instincts of the cops, coupled with an outside forensic expert's opinion, convince authorities who the real killer is.

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

In Tamarac, Fla., a new boy becomes friends with the most unruly youngsters in his neighborhood, leading to bad blood that boils over on Halloween and comes to a horrific end.

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

Homicide investigators are convinced an apparent murder-suicide was staged but the experienced CSI on the scene disagrees; only the instincts of the cops, coupled with an outside forensic expert's opinion, convince authorities who the real killer is.

Officer Nolan's trust is tested when he tries to help the previous owner of his home reconnect with his family; Officer Harper's overnight visit with her daughter is put into jeopardy when her past undercover life resurfaces again.

Officer Nolan and the team are charged with escorting a notorious female serial killer to the graves of her victims; Officer Chen meets a seemingly perfect man who sparks her interest; Officer Lopez worries about Wesley.

Officer Nolan and the entire team are in a desperate search to rescue Officer Chen after her abduction; Officer Lopez discovers Wesley unconscious from a dangerous cocktail of alcohol and pills.

Nolan takes his son's fiancée, Abigail, on a ride-along after she shows interest in becoming a police officer; Jackson's relationship becomes increasingly complicated.

Nolan is given some life-changing news and invites Grace over for a home-cooked meal in his newly remodeled kitchen; each unit is tasked with following up on dormant cases in hopes of uncovering new leads.

Officers Nolan and Harper investigate a murder which may have national security implications; Officer Bradford must confront his past when he crosses paths with a homeless veteran.

Officer Nolan learns his identity has been stolen and could jeopardize his position as an officer; Sgt. Grey must testify at the parole hearing of the man who shot him and murdered his partner.

Dutch assigns Angelo to kill an Internal Affairs agent who threatens to take down their whole operation; still rattled by the shooting, Maria seeks Dave's help in procuring a gun; agent Grant runs into Angelo, who suspects she may see him as more than just the father of a victim.

Officer Nolan and the team are charged with escorting a notorious female serial killer to the graves of her victims; Officer Chen meets a seemingly perfect man who sparks her interest; Officer Lopez worries about Wesley.

Officer Nolan and the entire team are in a desperate search to rescue Officer Chen after her abduction; Officer Lopez discovers Wesley unconscious from a dangerous cocktail of alcohol and pills.

Dutch assigns Angelo to kill an Internal Affairs agent who threatens to take down their whole operation; still rattled by the shooting, Maria seeks Dave's help in procuring a gun; agent Grant runs into Angelo, who suspects she may see him as more than just the father of a victim.

Nolan is given some life-changing news and invites Grace over for a home-cooked meal in his newly remodeled kitchen; each unit is tasked with following up on dormant cases in hopes of uncovering new leads.

Officers Nolan and Harper investigate a murder which may have national security implications; Officer Bradford must confront his past when he crosses paths with a homeless veteran.

Officer Nolan learns his identity has been stolen and could jeopardize his position as an officer; Sgt. Grey must testify at the parole hearing of the man who shot him and murdered his partner.

Officer Nolan's trust is tested when he tries to help the previous owner of his home reconnect with his family; Officer Harper's overnight visit with her daughter is put into jeopardy when her past undercover life resurfaces again.

Police struggle to identify the body of a woman found floating in the Indian River; with only a piece of nautical rope, a strip of duct tape and some plastic bags to go on, they use every forensic tool they have to catch her killer.

From tropical Hawaii to the frigid waters of Lake Ontario, experts reveal the clues nature leaves behind on a human corpse.

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

The members of the 118 rush to the site of a hit-and-run that leaves a familiar face in critical condition; with Buck's help, Athena investigates the case of a missing woman; Josh recalls an emergency in 2006 that led him to become a first responder.

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.

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.

The members of the 118 rush to the site of a hit-and-run that leaves a familiar face in critical condition; with Buck's help, Athena investigates the case of a missing woman; Josh recalls an emergency in 2006 that led him to become a first responder.

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.

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.

The members of the 118 rush to the site of a hit-and-run that leaves a familiar face in critical condition; with Buck's help, Athena investigates the case of a missing woman; Josh recalls an emergency in 2006 that led him to become a first responder.

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.

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.

Police struggle to identify the body of a woman found floating in the Indian River; with only a piece of nautical rope, a strip of duct tape and some plastic bags to go on, they use every forensic tool they have to catch her killer.

From tropical Hawaii to the frigid waters of Lake Ontario, experts reveal the clues nature leaves behind on a human corpse.

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

Using technology to solve crime.

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

Two members of the firehouse go missing after a routine call; Casey and Dawson struggle to balance their personal and professional lives; Boden and Donna learn their baby has potential complications.

Evidence at a storage unit fire seems to be connected to the blaze that took Shay's life; Chaplain Orlovsky is in a car accident.

More clues emerge about the fire that killed Shay, leading Severide to a former nemesis; Shay's sister visits; Cruz is faced with a surprise; Boden tries to help his father.

The pursuit of a missing teenager leaves Mills and Brett stranded in unforgiving elements; members of the firehouse care for an abandoned newborn; Severide receives an intriguing proposal; Boden is at odds with his father (Richard Roundtree).

A temporary chief fills in for Boden, who is forced to take some time off for personal reasons; Lt. Severide deals with an unwelcome addition to the squad; Brett becomes close to a girl she previously rescued; Casey starts seeing a new woman.

Severide steps in when Chief Pridgen tries to shift blame for a tactical error onto Casey; Mouch learns he fathered a child through a sperm donation; Brett and Cruz take Dawson on a double date.

Severide talks to Chief Boden for an old friend who needs a second chance with the fire department; Mills endeavors to regain his active status; Brett and Dawson decide they need a night out.

Two members of the firehouse go missing after a routine call; Casey and Dawson struggle to balance their personal and professional lives; Boden and Donna learn their baby has potential complications.

Evidence at a storage unit fire seems to be connected to the blaze that took Shay's life; Chaplain Orlovsky is in a car accident.

More clues emerge about the fire that killed Shay, leading Severide to a former nemesis; Shay's sister visits; Cruz is faced with a surprise; Boden tries to help his father.

The pursuit of a missing teenager leaves Mills and Brett stranded in unforgiving elements; members of the firehouse care for an abandoned newborn; Severide receives an intriguing proposal; Boden is at odds with his father (Richard Roundtree).

A temporary chief fills in for Boden, who is forced to take some time off for personal reasons; Lt. Severide deals with an unwelcome addition to the squad; Brett becomes close to a girl she previously rescued; Casey starts seeing a new woman.

Severide steps in when Chief Pridgen tries to shift blame for a tactical error onto Casey; Mouch learns he fathered a child through a sperm donation; Brett and Cruz take Dawson on a double date.

Severide talks to Chief Boden for an old friend who needs a second chance with the fire department; Mills endeavors to regain his active status; Brett and Dawson decide they need a night out.

Two members of the firehouse go missing after a routine call; Casey and Dawson struggle to balance their personal and professional lives; Boden and Donna learn their baby has potential complications.

Evidence at a storage unit fire seems to be connected to the blaze that took Shay's life; Chaplain Orlovsky is in a car accident.

More clues emerge about the fire that killed Shay, leading Severide to a former nemesis; Shay's sister visits; Cruz is faced with a surprise; Boden tries to help his father.

The pursuit of a missing teenager leaves Mills and Brett stranded in unforgiving elements; members of the firehouse care for an abandoned newborn; Severide receives an intriguing proposal; Boden is at odds with his father (Richard Roundtree).

A temporary chief fills in for Boden, who is forced to take some time off for personal reasons; Lt. Severide deals with an unwelcome addition to the squad; Brett becomes close to a girl she previously rescued; Casey starts seeing a new woman.

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

Using technology to solve crime.

Fire, water, earth - killers call on all the elements in their attempt to cover up their crimes.

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

In Dayton, Ohio, a woman welcomes a young family when they move into the long-derelict house next door, then escalating fights over pets and children lead to a deadly confrontation.

Fire, water, earth - killers call on all the elements in their attempt to cover up their crimes.

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

In Dayton, Ohio, a woman welcomes a young family when they move into the long-derelict house next door, then escalating fights over pets and children lead to a deadly confrontation.

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

Fire, water, earth - killers call on all the elements in their attempt to cover up their crimes.

Herrmann tries to rescue a toddler from a structure fire; Mills discovers unexpected news; Brett and Cruz's relationship reaches a critical juncture; Otis is surprised by some feelings that develop.

Members of Firehouse 51 transport victims of a gas leak to nearby Chicago Med; an armed patient claiming to be carrying a deadly airborne disease forces Chicago Med into lockdown.

Mills works to save the life of a driver injured in a car wreck; Casey harbors doubts about Jack Nesbitt; Hermann, Otis, Cruz and Chaplain Orlovsky ready their team for the peewee hockey championship.

An apartment fire with connections to a rape and attempted murder leads to a joint investigation with the CPD and Sgt. Benson of the NYPD's Special Victims Unit; Dawson risks her life during a call.

Sgt. Voight encourages Lt. Casey to go undercover in order to obtain proof of Jack Nesbitt's shady dealings; tensions grow between Otis and Severide; Herrmann helps another member of the firehouse.

Lt. Casey ends up in danger as he continues to investigate Jack Nesbitt; Boden tries to create unity in the house; Cruz and Boden put their lives on the line to save their own when a warehouse blaze gets out of control; Dawson receives news.

After Fiona and Róisín uncover Declan's hard drive, Fiona questions his death; Johnny McIntyre is mysteriously broken out of prison.

Due to slum conditions in Harlem, Adam Clayton Powell Jr. leads a rent strike and investigates the owners of the buildings; Ernie Nunzi searches for the hooker who helped set up Zambrano; Bumpy and Mayme experience tension in their marriage.

Bumpy blackmails the mob in an effort to secure the safety of himself and his family; President John F. Kennedy is assassinated; Teddy performs at the Apollo Theater in Harlem.

Mills works to save the life of a driver injured in a car wreck; Casey harbors doubts about Jack Nesbitt; Hermann, Otis, Cruz and Chaplain Orlovsky ready their team for the peewee hockey championship.

An apartment fire with connections to a rape and attempted murder leads to a joint investigation with the CPD and Sgt. Benson of the NYPD's Special Victims Unit; Dawson risks her life during a call.

After Fiona and Róisín uncover Declan's hard drive, Fiona questions his death; Johnny McIntyre is mysteriously broken out of prison.

Due to slum conditions in Harlem, Adam Clayton Powell Jr. leads a rent strike and investigates the owners of the buildings; Ernie Nunzi searches for the hooker who helped set up Zambrano; Bumpy and Mayme experience tension in their marriage.

Bumpy blackmails the mob in an effort to secure the safety of himself and his family; President John F. Kennedy is assassinated; Teddy performs at the Apollo Theater in Harlem.

An industrious woman and an ambitious man buy adjoining houses, intending to restore the derelict properties to their former glory, but when one of the renovations falls behind, it leads to conflict and murder.

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.

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.

An industrious woman and an ambitious man buy adjoining houses, intending to restore the derelict properties to their former glory, but when one of the renovations falls behind, it leads to conflict and murder.

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.

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.

An industrious woman and an ambitious man buy adjoining houses, intending to restore the derelict properties to their former glory, but when one of the renovations falls behind, it leads to conflict and murder.

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.

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 deals with the aftermath of a school bus crash; Dr. Charles worries Dr. Halstead is putting his medical license in jeopardy; Maggie helps a friend in need.

Two brothers in critical condition are rushed into the hospital by their parents, leaving Dr. Choi, April and Dr. Charles to piece together what actually transpired; Dr. Manning becomes suspicious of a new mother entering the E.D.

Dr. Manning and Dr. Marcel disagree over an abusive husband; Dr. Halstead struggles with ethics and his decision to work at the safe injection site; Dr. Charles and Elsa reveal a misdiagnosis that may change a family's life.

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.

The team deals with the aftermath of a school bus crash; Dr. Charles worries Dr. Halstead is putting his medical license in jeopardy; Maggie helps a friend in need.

Two brothers in critical condition are rushed into the hospital by their parents, leaving Dr. Choi, April and Dr. Charles to piece together what actually transpired; Dr. Manning becomes suspicious of a new mother entering the E.D.

Dr. Manning and Dr. Marcel disagree over an abusive husband; Dr. Halstead struggles with ethics and his decision to work at the safe injection site; Dr. Charles and Elsa reveal a misdiagnosis that may change a family's life.

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.

The team deals with the aftermath of a school bus crash; Dr. Charles worries Dr. Halstead is putting his medical license in jeopardy; Maggie helps a friend in need.

A single mother of four children finds the perfect house in New Orleans, then a robbery at a neighbor's home leads to a misunderstanding, then to paranoia, conflict and bloodshed.

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

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

A single mother of four children finds the perfect house in New Orleans, then a robbery at a neighbor's home leads to a misunderstanding, then to paranoia, conflict and bloodshed.

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

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

A single mother of four children finds the perfect house in New Orleans, then a robbery at a neighbor's home leads to a misunderstanding, then to paranoia, conflict and bloodshed.

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

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

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.

Bobby and the 118 race to save lives after an explosion rocks the hospital where Dr. David Hale is performing surgery; Michael makes a life-changing decision.

An abandoned oil well erupts and causes a massive sinkhole in downtown LA; Athena investigates a 30-year-old cold case involving a casino robbery; Buck fears his relationship with Taylor might be ending.

Martin Best is a brilliant surgeon who abruptly leaves his illustrious career in Boston to become the general practitioner in a quaint East Coast fishing village where he spent summers as a child. Unfortunately, Martin's blunt and borderline rude bedside manner rubs the quirky, needy locals the wrong way, and he quickly alienates the town, even though he's all they've got. Although Martin can expertly address any medical ailment or mystery in this idiosyncratic town, he's really just desperate to be left the hell alone. Instead, he keeps getting dragged right smack into the middle of their personal chaos, feuds and fantasies. What the locals don't know is that Martin's terse demeanor masks a debilitating new phobia and deep-seated psychological issues that prevent him from experiencing true intimacy with anyone. But tenacity is the creed of everyone in their small village, and the people who live there may be exactly what the doctor ordered.

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.

Bobby and the 118 race to save lives after an explosion rocks the hospital where Dr. David Hale is performing surgery; Michael makes a life-changing decision.

An abandoned oil well erupts and causes a massive sinkhole in downtown LA; Athena investigates a 30-year-old cold case involving a casino robbery; Buck fears his relationship with Taylor might be ending.

The members of the 118 are called to a series of emergencies around Christmas Eve; Eddie struggles with an emotional Christopher.

Martin Best is a brilliant surgeon who abruptly leaves his illustrious career in Boston to become the general practitioner in a quaint East Coast fishing village where he spent summers as a child. Unfortunately, Martin's blunt and borderline rude bedside manner rubs the quirky, needy locals the wrong way, and he quickly alienates the town, even though he's all they've got. Although Martin can expertly address any medical ailment or mystery in this idiosyncratic town, he's really just desperate to be left the hell alone. Instead, he keeps getting dragged right smack into the middle of their personal chaos, feuds and fantasies. What the locals don't know is that Martin's terse demeanor masks a debilitating new phobia and deep-seated psychological issues that prevent him from experiencing true intimacy with anyone. But tenacity is the creed of everyone in their small village, and the people who live there may be exactly what the doctor ordered.

A decorated police officer relies on his neighbors to help him take care of his beloved daughter, then she accuses one of them of molesting her, and all hell breaks loose.

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

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

A decorated police officer relies on his neighbors to help him take care of his beloved daughter, then she accuses one of them of molesting her, and all hell breaks loose.

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

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

A decorated police officer relies on his neighbors to help him take care of his beloved daughter, then she accuses one of them of molesting her, and all hell breaks loose.

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

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

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. 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.

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. 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.

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.

In New Brighton, Minn., two neighbors get along great until one of them catches Lyme Disease from the deer the other feeds on his property, then the ensuing blame game leads to rising hostility and ends in gunfire.

The disappearance of millionaire Frank Black.

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

In New Brighton, Minn., two neighbors get along great until one of them catches Lyme Disease from the deer the other feeds on his property, then the ensuing blame game leads to rising hostility and ends in gunfire.

The disappearance of millionaire Frank Black.

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

In New Brighton, Minn., two neighbors get along great until one of them catches Lyme Disease from the deer the other feeds on his property, then the ensuing blame game leads to rising hostility and ends in gunfire.

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

The disappearance of millionaire Frank Black.

Officers Chen and Bradford respond to a call at the Los Angeles auditions of "American Idol" and Officer Chen ends up facing Ryan Seacrest and the judges; Chen befriends a reporter whose motives are not clear.

Officer Nolan's relationship with his first confidential informant is tested when he discovers her back on the street dealing drugs; Lucy's fear of dating following her abduction is beginning to threaten her friendship with Jackson.

Officers Nolan and Harper escort four juvenile offenders to a Scared Straight program at a correctional facility, but it quickly becomes a riotous situation; Nolan is uncertain about Grace after she fails to introduce him to her ex-husband.

Officers Nolan, Chen and West are squeezed harder than ever before as their training officers evaluate whether they are truly ready for the job; one of the rookie classmates is involved in a shooting.

Nolan's discovery goes much deeper than he expected and could put his life and career in jeopardy.

Nearing the end of his training, Nolan faces his biggest challenge as a police officer yet when he must come to terms with the choices he has made in pursuit of the truth.

Officer John Nolan and Officer Nyla Harper are assigned to a community policing center in an attempt to rebuild their station's reputation in the community.

Angelo postpones a hit to hunt for The Ferryman, who Angelo believes was responsible for shooting Maria; the F.B.I. investigates a crime scene linked to Angelo.

Officer Nolan's relationship with his first confidential informant is tested when he discovers her back on the street dealing drugs; Lucy's fear of dating following her abduction is beginning to threaten her friendship with Jackson.

Officers Nolan and Harper escort four juvenile offenders to a Scared Straight program at a correctional facility, but it quickly becomes a riotous situation; Nolan is uncertain about Grace after she fails to introduce him to her ex-husband.

Angelo postpones a hit to hunt for The Ferryman, who Angelo believes was responsible for shooting Maria; the F.B.I. investigates a crime scene linked to Angelo.

Nolan's discovery goes much deeper than he expected and could put his life and career in jeopardy.

Nearing the end of his training, Nolan faces his biggest challenge as a police officer yet when he must come to terms with the choices he has made in pursuit of the truth.

Officer John Nolan and Officer Nyla Harper are assigned to a community policing center in an attempt to rebuild their station's reputation in the community.

Officers Chen and Bradford respond to a call at the Los Angeles auditions of "American Idol" and Officer Chen ends up facing Ryan Seacrest and the judges; Chen befriends a reporter whose motives are not clear.

CSIs determine that a girl's ex-husband had his parents assassinate her.

Explosive experts sifting through bomb evidence discover a more insidious plan.

A private school owner is kidnapped.

Athena, Bobby and the 118 must rescue a family whose pick-up truck has been rigged with a pipe bomb that will detonate if the vehicle slows down and goes under 55 mph; Eddie has a rough transition into his new job; Buck makes a relationship decision.

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 woman 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.

Athena, Bobby and the 118 must rescue a family whose pick-up truck has been rigged with a pipe bomb that will detonate if the vehicle slows down and goes under 55 mph; Eddie has a rough transition into his new job; Buck makes a relationship decision.

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 woman 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.

Athena, Bobby and the 118 must rescue a family whose pick-up truck has been rigged with a pipe bomb that will detonate if the vehicle slows down and goes under 55 mph; Eddie has a rough transition into his new job; Buck makes a relationship decision.

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 woman 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.

CSIs determine that a girl's ex-husband had his parents assassinate her.

Explosive experts sifting through bomb evidence discover a more insidious plan.

An abandoned suitcase containing a young woman's body, leads to a mystery of a second woman missing too.

The murder of a gay couple in rural California leads investigators into the world of hate crimes.

Investigators are drawn into the dark world of high-end prostitution, illegal aliens and Russian organized crime.

Chief Boden's job is on the line in the wake of a complicated call to a fire; Severide struggles to adjust to his smaller role and the presence of his new commanding officer; Casey works on finding evidence in his investigation against Nesbitt.

When new evidence appears in the internal affairs investigation that will clear Chief Boden, a twist puts him right back in the thick of it; Brett and Chili try to save a stabbing victim from bleeding to death.

Members of the firehouse band together to help one of their own; Herrmann looks for a way to reopen Molly's; Severide struggles to deal with one of his toughest days as he looks into the arson investigation.

Boden steps up to host a neighborhood wedding that was ruined by a fire; Chief Riddle's political aspirations cause friction at the firehouse; Severide fights his way back to his old position.

Chief Boden's new neighbor asks him for a favor; tension escalates between Severide and Captain Patterson; Cruz receives a surprise visitor; Mouch and Herrmann are excited to receive concert tickets to see Rush.

Boden thinks he's being set up by his neighbor; Severide's father pays him an unexpected visit; romance is in the air at the Chicago Fire Department gala.

Patterson questions Boden's ability to lead the firehouse as the trial approaches; Brett and Chili find an unconscious man in a garden; Otis tries to fill his social calendar.

Chief Boden's job is on the line in the wake of a complicated call to a fire; Severide struggles to adjust to his smaller role and the presence of his new commanding officer; Casey works on finding evidence in his investigation against Nesbitt.

When new evidence appears in the internal affairs investigation that will clear Chief Boden, a twist puts him right back in the thick of it; Brett and Chili try to save a stabbing victim from bleeding to death.

Members of the firehouse band together to help one of their own; Herrmann looks for a way to reopen Molly's; Severide struggles to deal with one of his toughest days as he looks into the arson investigation.