While tracking the son of a prominent New Jersey cupcake chain founder, Colter gets thrust into the middle of a violent mafia war.

When an undercover narcotics officer goes missing, Antonio is asked to help find him; Burgess and Roman ask Mouch (Christian Stolte) for help with a squatter situation.

Max and Avery are at a crossroads as Avery faces a difficult pregnancy decision; after Munroe is bitten by a shark, The Odyssey takes a dangerous detour to rescue a sinking boat, where a mysterious new passenger catches Max's eye.

The members of intelligence go under cover at a World Trade conference to assess political threats; Halstead's brother immediately stirs up trouble when he shows up in town.

An investigation into a drug robbery gone wrong reveals Voight has ties to a teen linked to a double murder; Desk Sgt. Platt cares for a young girl.

A case involving one of Chicago's most wanted fugitives hits close to home with Olinsky; an altercation with another officer lands Sean Roman in hot water; Platt helps Nadia prepare for her polygraph test.

When Lanell Barsock is found murdered, it seems obvious to all that her boyfriend did it; when the forensic evidence comes in, investigators are astonished to learn they've arrested the wrong person.

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.

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.

After arriving in Chicago to assist Voight and the team with a rape/murder case that has distinct similarities to a decade-old case from New York, Sgt. Benson asks Fin and Amaro to help; the prime suspect asks for a meeting with Lindsay.

Still struggling with a loss, the team must put feelings aside when a cafe is bombed; Atwater winds up in hot water after making a mistake.

A mass shooting takes place in an athletic club; Atwater deals with his new assignment; Halstead and Platt try to check up on Lindsay.

Voight and the team help retired Cmdr. Perry extract his nephew from a corrupt unit; Lindsay struggles to stay clean; a woman from Olinsky's past contacts him.

Intelligence pursues heroin kingpin Derek Keyes; Lindsay's downward spiral continues; Olinsky tells Platt about a secret from his past; Roman talks to Burgess about his concerns regarding Ruzek.

Roman and Burgess discover the corpse of a young boy who was reported missing; Burgess talks to Ruzek about Roman's suspicious behavior; Bunny plans to make a statement that could impact Voight's career.

A desperate man searching for his daughter holds a member of the team hostage; Voight learns about the accusations Bunny made regarding a case from his past; Antonio finds out that Olinsky has been keeping a secret.

After arriving in Chicago to assist Voight and the team with a rape/murder case that has distinct similarities to a decade-old case from New York, Sgt. Benson asks Fin and Amaro to help; the prime suspect asks for a meeting with Lindsay.

Still struggling with a loss, the team must put feelings aside when a cafe is bombed; Atwater winds up in hot water after making a mistake.

A mass shooting takes place in an athletic club; Atwater deals with his new assignment; Halstead and Platt try to check up on Lindsay.

Voight and the team help retired Cmdr. Perry extract his nephew from a corrupt unit; Lindsay struggles to stay clean; a woman from Olinsky's past contacts him.

Intelligence pursues heroin kingpin Derek Keyes; Lindsay's downward spiral continues; Olinsky tells Platt about a secret from his past; Roman talks to Burgess about his concerns regarding Ruzek.

Roman and Burgess discover the corpse of a young boy who was reported missing; Burgess talks to Ruzek about Roman's suspicious behavior; Bunny plans to make a statement that could impact Voight's career.

A desperate man searching for his daughter holds a member of the team hostage; Voight learns about the accusations Bunny made regarding a case from his past; Antonio finds out that Olinsky has been keeping a secret.

After arriving in Chicago to assist Voight and the team with a rape/murder case that has distinct similarities to a decade-old case from New York, Sgt. Benson asks Fin and Amaro to help; the prime suspect asks for a meeting with Lindsay.

Still struggling with a loss, the team must put feelings aside when a cafe is bombed; Atwater winds up in hot water after making a mistake.

A mass shooting takes place in an athletic club; Atwater deals with his new assignment; Halstead and Platt try to check up on Lindsay.

Intelligence pursues heroin kingpin Derek Keyes; Lindsay's downward spiral continues; Olinsky tells Platt about a secret from his past; Roman talks to Burgess about his concerns regarding Ruzek.

Roman and Burgess discover the corpse of a young boy who was reported missing; Burgess talks to Ruzek about Roman's suspicious behavior; Bunny plans to make a statement that could impact Voight's career.

A desperate man searching for his daughter holds a member of the team hostage; Voight learns about the accusations Bunny made regarding a case from his past; Antonio finds out that Olinsky has been keeping a secret.

Chief Boden faces accusations that he abandoned a homeless man to die in a warehouse fire; Severide helps an elderly woman; Detective Voight tries to convince Casey not to testify against his son; Shay has to face her ex during a call.

Casey must face the consequences of confronting Detective Voight; Dawson faces disciplinary action; Severide reaches out to an old friend about his injury.

Dawson receives help from a girl she saved; Detective Voight is determined to get Casey to retract his statement.

The Firehouse 51 crew has a Thanksgiving to remember when drugs, a car accident, and a gang shooting get in the way of traditional holiday pastimes.

Peter is deeply upset when a young victim is discovered at the site of a train accident; an abusive mother takes dire actions; Severide's injury is aggravated.

Jose Vargas is forced to go on disability after sustaining an injury in a fire; Severide receives a tempting invitation from a woman he saved from a car crash; Cruz tries to end his brother's involvement with a gang.

An expensive necklace goes missing at the scene of a fire, leading to an internal investigation; Cruz makes a desperate decision to save his brother from a gang war; Dawson invites Casey to a party.

Cruz struggles with guilt and decides to make a confession to Casey; Severide asks Dawson for help with his injury; Herrmann is faced with an unpleasant business deal.

Severide finally decides to discuss his injury with Chief Boden; Casey deals with family issues; Dawson responds to a rescue call and realizes a young girl is the only survivor.

Chief Boden faces accusations that he abandoned a homeless man to die in a warehouse fire; Severide helps an elderly woman; Detective Voight tries to convince Casey not to testify against his son; Shay has to face her ex during a call.

Casey must face the consequences of confronting Detective Voight; Dawson faces disciplinary action; Severide reaches out to an old friend about his injury.

Dawson receives help from a girl she saved; Detective Voight is determined to get Casey to retract his statement.

The Firehouse 51 crew has a Thanksgiving to remember when drugs, a car accident, and a gang shooting get in the way of traditional holiday pastimes.

Peter is deeply upset when a young victim is discovered at the site of a train accident; an abusive mother takes dire actions; Severide's injury is aggravated.

Jose Vargas is forced to go on disability after sustaining an injury in a fire; Severide receives a tempting invitation from a woman he saved from a car crash; Cruz tries to end his brother's involvement with a gang.

An expensive necklace goes missing at the scene of a fire, leading to an internal investigation; Cruz makes a desperate decision to save his brother from a gang war; Dawson invites Casey to a party.

Cruz struggles with guilt and decides to make a confession to Casey; Severide asks Dawson for help with his injury; Herrmann is faced with an unpleasant business deal.

Severide finally decides to discuss his injury with Chief Boden; Casey deals with family issues; Dawson responds to a rescue call and realizes a young girl is the only survivor.

Chief Boden faces accusations that he abandoned a homeless man to die in a warehouse fire; Severide helps an elderly woman; Detective Voight tries to convince Casey not to testify against his son; Shay has to face her ex during a call.

Casey must face the consequences of confronting Detective Voight; Dawson faces disciplinary action; Severide reaches out to an old friend about his injury.

Dawson receives help from a girl she saved; Detective Voight is determined to get Casey to retract his statement.

The Firehouse 51 crew has a Thanksgiving to remember when drugs, a car accident, and a gang shooting get in the way of traditional holiday pastimes.

Peter is deeply upset when a young victim is discovered at the site of a train accident; an abusive mother takes dire actions; Severide's injury is aggravated.

Jose Vargas is forced to go on disability after sustaining an injury in a fire; Severide receives a tempting invitation from a woman he saved from a car crash; Cruz tries to end his brother's involvement with a gang.

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.

Andy goes under cover as a prostitute during a citywide sting operation; Dov and Andy's attempt to impress Sgt. Boyko backfires.

Team One is in pursuit of James Mitchell, an armed man hunting for his ex-wife.

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.

Andy goes under cover as a prostitute during a citywide sting operation; Dov and Andy's attempt to impress Sgt. Boyko backfires.

Team One is in pursuit of James Mitchell, an armed man hunting for his ex-wife.

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.

Andy goes under cover as a prostitute during a citywide sting operation; Dov and Andy's attempt to impress Sgt. Boyko backfires.

Team One is in pursuit of James Mitchell, an armed man hunting for his ex-wife.

A man dies in a fire set by a troubled teenager; Severide contacts his father; Otis fills in for some shifts at the slowest firehouse in the city; Shay and Dawson wind up in a bad situation.

Severide realizes he shares a similar past with the lieutenant who has been helping out at the firehouse; Dawson shares a secret with Shay; Casey faces family issues.

Dawson turns to an unlikely source for assistance as she tries to help her brother; Severide does a favor for Lt. Whaley; Herrmann and Otis make tough discoveries about their silent partner.

Cruz puts himself and his fellow firefighters in danger; Casey tries to resolve issues with his sister and mother; the team assists the bomb squad with a dangerous call.

When Severide's father (Treat Williams) visits, he clashes with Chief Boden over a former colleague's death; Shay makes a decision about Clarice; the mystery about Herrmann, Otis and Dawson's bar is revealed.

Mills questions Bennie about the fire that killed Mills' father; Casey, Severide and Bennie investigate two mysterious diner fires.

As WWI ends, housewife Kate Galloway sets up a nightclub in Soho to support her daughters; Kate must contend with a dangerous gangster family and the police to survive.

A man dies in a fire set by a troubled teenager; Severide contacts his father; Otis fills in for some shifts at the slowest firehouse in the city; Shay and Dawson wind up in a bad situation.

A man dies in a fire set by a troubled teenager; Severide contacts his father; Otis fills in for some shifts at the slowest firehouse in the city; Shay and Dawson wind up in a bad situation.

Severide realizes he shares a similar past with the lieutenant who has been helping out at the firehouse; Dawson shares a secret with Shay; Casey faces family issues.

Severide realizes he shares a similar past with the lieutenant who has been helping out at the firehouse; Dawson shares a secret with Shay; Casey faces family issues.

Dawson turns to an unlikely source for assistance as she tries to help her brother; Severide does a favor for Lt. Whaley; Herrmann and Otis make tough discoveries about their silent partner.

Cruz puts himself and his fellow firefighters in danger; Casey tries to resolve issues with his sister and mother; the team assists the bomb squad with a dangerous call.

When Severide's father (Treat Williams) visits, he clashes with Chief Boden over a former colleague's death; Shay makes a decision about Clarice; the mystery about Herrmann, Otis and Dawson's bar is revealed.

Mills questions Bennie about the fire that killed Mills' father; Casey, Severide and Bennie investigate two mysterious diner fires.

Mills questions Bennie about the fire that killed Mills' father; Casey, Severide and Bennie investigate two mysterious diner fires.

Kate and Billie set up their new club; Violet goes deeper undercover to find out the truth about Silvio; opening night takes a turn when the Saluccis arrive.

As WWI ends, housewife Kate Galloway sets up a nightclub in Soho to support her daughters; Kate must contend with a dangerous gangster family and the police to survive.

A man dies in a fire set by a troubled teenager; Severide contacts his father; Otis fills in for some shifts at the slowest firehouse in the city; Shay and Dawson wind up in a bad situation.

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.

Andy and Traci are among the first responders to a home invasion at an upscale address; when the crisis appears to be over, Traci hurries away to handle a personal emergency; Andy must confront the armed suspect alone.

An abduction at a doctor's office leads to the team facing a desperate felon.

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.

Andy and Traci are among the first responders to a home invasion at an upscale address; when the crisis appears to be over, Traci hurries away to handle a personal emergency; Andy must confront the armed suspect alone.

An abduction at a doctor's office leads to the team facing a desperate felon.

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.

Andy and Traci are among the first responders to a home invasion at an upscale address; when the crisis appears to be over, Traci hurries away to handle a personal emergency; Andy must confront the armed suspect alone.

An abduction at a doctor's office leads to the team facing a desperate felon.

A patient's life is in jeopardy when legal issues complicate an essential bone marrow transplant; Dr. Charles comes to an unusual conclusion about a homeless man's recent behavior; Dr. Manning's parents visit; victims of a hit-and-run accident.

After returning from maternity leave, Dr. Manning helps treat a teenager with an extensive history of medical issues; Dr. Choi goes above and beyond when a former Navy shipmate has a potentially life-threatening ailment; a budding romance.

Dr. Halstead's career is in jeopardy when he revives a terminally ill patient, despite a do not resuscitate order; a patient inspires Dr. Choi to seek advice from Dr. Charles; everyone is shocked by a revelation about a member of the staff.

A 9/11 hero with pulmonary fibrosis needs a new set of lungs; Sarah considers hospitals for her residency match while April and Maggie want to remain at Chicago Med; a teenage hockey player with an overbearing father is injured.

A patient with a life-threatening heart condition makes a decision that puts Rhodes and Choi at odds; the lawsuit against Halstead moves forward; a patient who was misdiagnosed has a flesh-eating bacterial disease; a girl with a contagious bacteria.

Nurse Lockwood is arrested for refusing to do a DUI blood test on a patient without his consent; Dr. Halstead discusses his impending lawsuit with his lawyer; Dr. Manning and Sharon Goodwin raise concerns about the nature of a baby's injuries.

A husband has an unusual request after the death of his wife; Dr. Charles tries to deal with a patient who wants to cut off his own arm; Dr. Rhodes is concerned about possible complications for a boy who swallowed magnets.

A patient's life is in jeopardy when legal issues complicate an essential bone marrow transplant; Dr. Charles comes to an unusual conclusion about a homeless man's recent behavior; Dr. Manning's parents visit; victims of a hit-and-run accident.

After returning from maternity leave, Dr. Manning helps treat a teenager with an extensive history of medical issues; Dr. Choi goes above and beyond when a former Navy shipmate has a potentially life-threatening ailment; a budding romance.

Dr. Halstead's career is in jeopardy when he revives a terminally ill patient, despite a do not resuscitate order; a patient inspires Dr. Choi to seek advice from Dr. Charles; everyone is shocked by a revelation about a member of the staff.

A 9/11 hero with pulmonary fibrosis needs a new set of lungs; Sarah considers hospitals for her residency match while April and Maggie want to remain at Chicago Med; a teenage hockey player with an overbearing father is injured.

A patient with a life-threatening heart condition makes a decision that puts Rhodes and Choi at odds; the lawsuit against Halstead moves forward; a patient who was misdiagnosed has a flesh-eating bacterial disease; a girl with a contagious bacteria.

Nurse Lockwood is arrested for refusing to do a DUI blood test on a patient without his consent; Dr. Halstead discusses his impending lawsuit with his lawyer; Dr. Manning and Sharon Goodwin raise concerns about the nature of a baby's injuries.

A husband has an unusual request after the death of his wife; Dr. Charles tries to deal with a patient who wants to cut off his own arm; Dr. Rhodes is concerned about possible complications for a boy who swallowed magnets.

A patient's life is in jeopardy when legal issues complicate an essential bone marrow transplant; Dr. Charles comes to an unusual conclusion about a homeless man's recent behavior; Dr. Manning's parents visit; victims of a hit-and-run accident.

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.

The investigation into a fatal traffic accident leads to the discovery of a darker crime; Andy objects to how Luke handles a young murder witness.

Team One discovers two young con artists who have ties to Pete Joris at a bank robbery.

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.

The investigation into a fatal traffic accident leads to the discovery of a darker crime; Andy objects to how Luke handles a young murder witness.

Team One discovers two young con artists who have ties to Pete Joris at a bank robbery.

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.

The investigation into a fatal traffic accident leads to the discovery of a darker crime; Andy objects to how Luke handles a young murder witness.

Team One discovers two young con artists who have ties to Pete Joris at a bank robbery.

A massive tsunami hits the Santa Monica Pier, jeopardizing the lives of both Buck and Christopher.

A massive tsunami hits the Santa Monica Pier; Buck fears the worst when Christopher goes missing.

The team races to save workers in a high-rise during a fire drill, car accident victims, and siblings fighting over a family heirloom; Buck gives Bobby surprising news; Eddie helps Christopher deal with the trauma caused by the tsunami.

The 118 races to help protesters at a slaughter house and a wife who finds herself trapped in a "rage room" with her husband's mistress; Athena takes action after Michael, May and Harry experience a traumatic traffic stop.

Athena and the 118 respond to bizarre emergency calls on Halloween, including a flock of crows terrorizing a field trip, an office employee having a close encounter with an eight-limbed creature and a ghost-like girl wandering a neighborhood.

When a murder weapon from a case close to Athena in the early '90s resurfaces, flashbacks to 1989 show how Athena joined the LAPD and became the police officer she is today.

A skating mishap at an ice show; an accident involving a self-driving car; a fulfillment warehouse robot goes rogue; Eddie's after-hours fight club gets out of control; Hen struggles in her relationship with Karen.

A massive tsunami hits the Santa Monica Pier, jeopardizing the lives of both Buck and Christopher.

A massive tsunami hits the Santa Monica Pier; Buck fears the worst when Christopher goes missing.

The team races to save workers in a high-rise during a fire drill, car accident victims, and siblings fighting over a family heirloom; Buck gives Bobby surprising news; Eddie helps Christopher deal with the trauma caused by the tsunami.

The 118 races to help protesters at a slaughter house and a wife who finds herself trapped in a "rage room" with her husband's mistress; Athena takes action after Michael, May and Harry experience a traumatic traffic stop.

Athena and the 118 respond to bizarre emergency calls on Halloween, including a flock of crows terrorizing a field trip, an office employee having a close encounter with an eight-limbed creature and a ghost-like girl wandering a neighborhood.

When a murder weapon from a case close to Athena in the early '90s resurfaces, flashbacks to 1989 show how Athena joined the LAPD and became the police officer she is today.

A skating mishap at an ice show; an accident involving a self-driving car; a fulfillment warehouse robot goes rogue; Eddie's after-hours fight club gets out of control; Hen struggles in her relationship with Karen.

A massive tsunami hits the Santa Monica Pier, jeopardizing the lives of both Buck and Christopher.

Mixing business with pleasure spells murder for neighboring best friends.

A heat wave makes life on the streets even more perilous for the rookies; the squad discovers that a serial rapist may be on the loose; during a blackout, Andy must take down a vicious predator alone.

Someone hacks the computer system to show a crime in progress.

Mixing business with pleasure spells murder for neighboring best friends.

A heat wave makes life on the streets even more perilous for the rookies; the squad discovers that a serial rapist may be on the loose; during a blackout, Andy must take down a vicious predator alone.

Someone hacks the computer system to show a crime in progress.

Mixing business with pleasure spells murder for neighboring best friends.

A heat wave makes life on the streets even more perilous for the rookies; the squad discovers that a serial rapist may be on the loose; during a blackout, Andy must take down a vicious predator alone.

Someone hacks the computer system to show a crime in progress.

Dr. Choi is tested when an erratic patient takes drastic measures; Dr. Manning questions the circumstances behind a young boy's broken wrist.

A patient refuses medication for her pain; Dr. Halstead treats a former high school classmate; a pregnant woman has a big reason not to deliver her child.

Doctors Rhodes and Downey are at odds over a patient's emergency heart surgery; Dr. Choi and a paramedic respond to a call from an injured hoarder; a woman is bitten by her own dog.

April and Dr. Halstead can't agree on how to treat a homeless alcoholic with a broken leg; Dr. Manning realizes her wedding ring has gone missing; two elderly women with the same symptoms are linked in a surprising way.

Dr. Rhodes cares for Dr. Downey while Goodwin deals with personal issues; April gets hit while tending to a disorderly patient; Dr. Manning's past starts to catch up with her.

Dr. Rhodes begins his cardiothoracic surgery fellowship but gets off on the wrong foot with his new boss; Dr. Choi begins his life as chief resident; Sarah is caught off-guard by Dr. Charles; April tries to deal with her recently discovered illness.

A blind former homicide detective gets the help of a professional seeing-eye guide - and agoraphobe - living 3,000 miles away to navigate life's obstacles and investigate crimes.

Dr. Choi is tested when an erratic patient takes drastic measures; Dr. Manning questions the circumstances behind a young boy's broken wrist.

A patient refuses medication for her pain; Dr. Halstead treats a former high school classmate; a pregnant woman has a big reason not to deliver her child.

Doctors Rhodes and Downey are at odds over a patient's emergency heart surgery; Dr. Choi and a paramedic respond to a call from an injured hoarder; a woman is bitten by her own dog.

April and Dr. Halstead can't agree on how to treat a homeless alcoholic with a broken leg; Dr. Manning realizes her wedding ring has gone missing; two elderly women with the same symptoms are linked in a surprising way.

Dr. Rhodes cares for Dr. Downey while Goodwin deals with personal issues; April gets hit while tending to a disorderly patient; Dr. Manning's past starts to catch up with her.

Dr. Rhodes begins his cardiothoracic surgery fellowship but gets off on the wrong foot with his new boss; Dr. Choi begins his life as chief resident; Sarah is caught off-guard by Dr. Charles; April tries to deal with her recently discovered illness.

A blind former homicide detective gets the help of a professional seeing-eye guide - and agoraphobe - living 3,000 miles away to navigate life's obstacles and investigate crimes.

Dr. Choi is tested when an erratic patient takes drastic measures; Dr. Manning questions the circumstances behind a young boy's broken wrist.

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.

Chris and Andy face a tough decision while investigating a vicious beating; Sam and Luke get competitive during a retraining exercise.

A young nurse is abducted by a serial killer whose past could save her life.

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.

Chris and Andy face a tough decision while investigating a vicious beating; Sam and Luke get competitive during a retraining exercise.

A young nurse is abducted by a serial killer whose past could save her life.

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.

Chris and Andy face a tough decision while investigating a vicious beating; Sam and Luke get competitive during a retraining exercise.

A young nurse is abducted by a serial killer whose past could save her life.

Voight believes the man who tried to kill him is someone he and Olinsky once put away; Atwater unintentionally spills information about Ruzek's history that disturbs Burgess.

Ruzek's future with the unit is in question after a botched undercover job; a corpse is discovered in an SUV; Lindsay and Halstead move forward with their relationship.

Ruzek's future with the unit is in question after a botched undercover job; a corpse is discovered in an SUV; Lindsay and Halstead move forward with their relationship.

Intelligence searches for a missing teen who they believe poses a threat to students at his school; Atwater wants to make a good impression on a police captain.

When Intelligence follows up on a tip about an upcoming drug trade, the team discovers a man's mutilated body; Burgess helps plan a surprise for Platt.

Amid a power outage, Max, Tristan, Avery and Brooke struggle to treat shark-inflicted wounds; as romantic tensions flare between Max and Brooke and new sparks fly between two former flames, the team must perform an emergency operation.

Colter is hired to find a mother in Ohio who went missing after tucking her son in for the night.

Will and Faith dive into the high-profile murder of a famous rapper, uncovering a web of corruption stretching beyond the music industry; Angie and Ormewood investigate an underground swinger's club, where nothing is quite as it seems.

Intelligence searches for a missing teen who they believe poses a threat to students at his school; Atwater wants to make a good impression on a police captain.

Colter is hired to find a mother in Ohio who went missing after tucking her son in for the night.

Will and Faith dive into the high-profile murder of a famous rapper, uncovering a web of corruption stretching beyond the music industry; Angie and Ormewood investigate an underground swinger's club, where nothing is quite as it seems.

Amid a power outage, Max, Tristan, Avery and Brooke struggle to treat shark-inflicted wounds; as romantic tensions flare between Max and Brooke and new sparks fly between two former flames, the team must perform an emergency operation.

Ruzek's future with the unit is in question after a botched undercover job; a corpse is discovered in an SUV; Lindsay and Halstead move forward with their relationship.

Intelligence searches for a missing teen who they believe poses a threat to students at his school; Atwater wants to make a good impression on a police captain.

When Intelligence follows up on a tip about an upcoming drug trade, the team discovers a man's mutilated body; Burgess helps plan a surprise for Platt.

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.

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

A decapitated corpse found in Lake Michigan is connected to Voight's social circle; Roman makes a grave error; Antonio makes a decision that could impact Michelle's future - without consulting Olinsky.

A doctor connected to Voight is investigated after four patients with chemo overdoses are sent to Chicago Med; Platt and Burgess work to clear Roman's name.

A teenage girl is violated during a home invasion; Voight helps a former acquaintance; Platt and Mouch receive upsetting news regarding their upcoming wedding.

Voight wants to make his former cellmate a confidential informant as the unit tries to take down a big cocaine supplier and local dealers; Burgess makes a decision about her relationship with Ruzek; Roman works with Firehouse 51 to fund a wedding.

Lindsay goes under cover in hopes of finding a police officer who targets women leaving a local casino; Burgess needs Platt's approval to move forward with her plan; Antonio offers to take Roman's place in an upcoming boxing match.

After escaping from a New York prison, convicted killer Gregory Yates (Dallas Roberts) heads to Chicago; SVU members Benson and Tutuola help investigate a triple homicide in Chicago; the team seeks a connection between Yates and a missing woman.

Burgess finds heroin in a duffel bag belonging to a mild-mannered and respected college professor; Roman talks to Platt about his career; Halstead takes an off-duty security job working for the attractive owner of a medical marijuana clinic.

A decapitated corpse found in Lake Michigan is connected to Voight's social circle; Roman makes a grave error; Antonio makes a decision that could impact Michelle's future - without consulting Olinsky.

A doctor connected to Voight is investigated after four patients with chemo overdoses are sent to Chicago Med; Platt and Burgess work to clear Roman's name.

A teenage girl is violated during a home invasion; Voight helps a former acquaintance; Platt and Mouch receive upsetting news regarding their upcoming wedding.

Voight wants to make his former cellmate a confidential informant as the unit tries to take down a big cocaine supplier and local dealers; Burgess makes a decision about her relationship with Ruzek; Roman works with Firehouse 51 to fund a wedding.

Lindsay goes under cover in hopes of finding a police officer who targets women leaving a local casino; Burgess needs Platt's approval to move forward with her plan; Antonio offers to take Roman's place in an upcoming boxing match.

After escaping from a New York prison, convicted killer Gregory Yates (Dallas Roberts) heads to Chicago; SVU members Benson and Tutuola help investigate a triple homicide in Chicago; the team seeks a connection between Yates and a missing woman.

Burgess finds heroin in a duffel bag belonging to a mild-mannered and respected college professor; Roman talks to Platt about his career; Halstead takes an off-duty security job working for the attractive owner of a medical marijuana clinic.

A decapitated corpse found in Lake Michigan is connected to Voight's social circle; Roman makes a grave error; Antonio makes a decision that could impact Michelle's future - without consulting Olinsky.

A doctor connected to Voight is investigated after four patients with chemo overdoses are sent to Chicago Med; Platt and Burgess work to clear Roman's name.

A teenage girl is violated during a home invasion; Voight helps a former acquaintance; Platt and Mouch receive upsetting news regarding their upcoming wedding.

Voight wants to make his former cellmate a confidential informant as the unit tries to take down a big cocaine supplier and local dealers; Burgess makes a decision about her relationship with Ruzek; Roman works with Firehouse 51 to fund a wedding.

Lindsay goes under cover in hopes of finding a police officer who targets women leaving a local casino; Burgess needs Platt's approval to move forward with her plan; Antonio offers to take Roman's place in an upcoming boxing match.

After escaping from a New York prison, convicted killer Gregory Yates (Dallas Roberts) heads to Chicago; SVU members Benson and Tutuola help investigate a triple homicide in Chicago; the team seeks a connection between Yates and a missing woman.

Burgess finds heroin in a duffel bag belonging to a mild-mannered and respected college professor; Roman talks to Platt about his career; Halstead takes an off-duty security job working for the attractive owner of a medical marijuana clinic.

A failed rescue attempt deeply affects the men and women of firehouse 51; Dawson and Shay deal with a junkie's crazy behavior during a call; the team upsets local drug dealers.

A paramedic candidate joins Shay and Dawson for a few shifts; Cindy Herrmann experiences pregnancy complications while her husband is out of town; Casey receives an unexpected visit.

Detective Voight shows up, looking to cash in the favor Dawson owes him; Casey's social life takes on a familiar pattern; Molly prepares for the grand opening of Dawson, Herrmann and Otis's bar; Severide faces a threat to his career.

Severide is accused of sexual misconduct; Casey starts to find satisfaction in his personal life; Dawson and Mills face challenges as they try to take their relationship to the next level; the squad faces a harrowing building collapse.

Lt. Casey must work with Voight and the Intelligence Unit; Shay grows increasingly excited about the prospect of motherhood; everyone comes together to support the opening of Molly's.

The squad must help defuse a volatile situation at the jail; Shay continues to be hopeful about motherhood; Herrmann's wife goes into labor; Mills and Dawson face important decisions.

Lt. Severide is targeted by an arsonist; Battalion Chief Boden clashes with Gail McLeod; the anniversary of Andy's death; Shay has suspicions; Mari visits Mouch.

Casey struggles with his new responsibilities; Severide dreads the arsonist's next attack; Mouch starts campaigning; Dawson and Shay decide they need to get out more.

Severide tries to prove his suspicions about the arsonist's identity; Casey gets accustomed to his new lifestyle; Dawson goes on a date with a regular from the bar.

A failed rescue attempt deeply affects the men and women of firehouse 51; Dawson and Shay deal with a junkie's crazy behavior during a call; the team upsets local drug dealers.

A paramedic candidate joins Shay and Dawson for a few shifts; Cindy Herrmann experiences pregnancy complications while her husband is out of town; Casey receives an unexpected visit.

Detective Voight shows up, looking to cash in the favor Dawson owes him; Casey's social life takes on a familiar pattern; Molly prepares for the grand opening of Dawson, Herrmann and Otis's bar; Severide faces a threat to his career.

Severide is accused of sexual misconduct; Casey starts to find satisfaction in his personal life; Dawson and Mills face challenges as they try to take their relationship to the next level; the squad faces a harrowing building collapse.

Lt. Casey must work with Voight and the Intelligence Unit; Shay grows increasingly excited about the prospect of motherhood; everyone comes together to support the opening of Molly's.

The squad must help defuse a volatile situation at the jail; Shay continues to be hopeful about motherhood; Herrmann's wife goes into labor; Mills and Dawson face important decisions.

Lt. Severide is targeted by an arsonist; Battalion Chief Boden clashes with Gail McLeod; the anniversary of Andy's death; Shay has suspicions; Mari visits Mouch.

Casey struggles with his new responsibilities; Severide dreads the arsonist's next attack; Mouch starts campaigning; Dawson and Shay decide they need to get out more.

Severide tries to prove his suspicions about the arsonist's identity; Casey gets accustomed to his new lifestyle; Dawson goes on a date with a regular from the bar.

A failed rescue attempt deeply affects the men and women of firehouse 51; Dawson and Shay deal with a junkie's crazy behavior during a call; the team upsets local drug dealers.

A paramedic candidate joins Shay and Dawson for a few shifts; Cindy Herrmann experiences pregnancy complications while her husband is out of town; Casey receives an unexpected visit.

Detective Voight shows up, looking to cash in the favor Dawson owes him; Casey's social life takes on a familiar pattern; Molly prepares for the grand opening of Dawson, Herrmann and Otis's bar; Severide faces a threat to his career.

Severide is accused of sexual misconduct; Casey starts to find satisfaction in his personal life; Dawson and Mills face challenges as they try to take their relationship to the next level; the squad faces a harrowing building collapse.

Lt. Casey must work with Voight and the Intelligence Unit; Shay grows increasingly excited about the prospect of motherhood; everyone comes together to support the opening of Molly's.

The squad must help defuse a volatile situation at the jail; Shay continues to be hopeful about motherhood; Herrmann's wife goes into labor; Mills and Dawson face important decisions.

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

Division 15 starts a city-wide search for an abducted 9-year-old girl; disturbing evidence is uncovered during an interrogation.

Team One confronts a man desperate to keep the promise he made to his deaf nephew by protecting the only place the boy has ever felt safe.

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

Division 15 starts a city-wide search for an abducted 9-year-old girl; disturbing evidence is uncovered during an interrogation.

Team One confronts a man desperate to keep the promise he made to his deaf nephew by protecting the only place the boy has ever felt safe.

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

Division 15 starts a city-wide search for an abducted 9-year-old girl; disturbing evidence is uncovered during an interrogation.

Team One confronts a man desperate to keep the promise he made to his deaf nephew by protecting the only place the boy has ever felt safe.

Severide wants to implicate the serial arsonist; Dawson and Shay face the unexpected on a routine call; suspicions indicate Clarke is the mole; Mouch campaigns for union president.

McLeod pushes Boden toward an early retirement and chooses a potential replacement; all make known their disdain for the mole; Shay enjoys a full social life.

Severide comes across a boy in need of help while out on a jog; Boden and McLeod clash over the future of the firehouse; Mouch and Greg Sullivan debate on Otis' podcast.

The firehouse crew goes to the scene of a railroad accident; Boden must make a big decision about his future; Severide learns more about the woman he saw with his father; Shay and Dawson continue to butt heads.

The shooting of a child in their neighborhood forces Cruz and his brother to think about the gang; Isabella gets Mills to dress up for a gala; Casey feels sad he will be seeing Dawson less; Shay gets in deeper with Devon.