After a baby is abducted, Goodwin enlists the help of Dr. Charles and Dr. Reese to find the suspect; due to the lockdown, Dr. Rhodes must figure out a way to get into the operating room to help perform open-heart surgery.

Dr. Charles and Dr. Reese search for answers when a mother claims her daughter is possessed; Dr. Rhodes and Dr. Bekker must find a way to save a pair of conjoined twins; Dr. Halstead struggles to get Dr. Manning's attention.

After taking the lead on a surgery, Dr. Bekker feels the heat after something goes wrong; Dr. Manning and Dr. Charles are faced with a tough decision concerning a 9-year-old girl; April and Dr. Reese rush to find the son of a dying patient.

In a high-crime Seattle suburb, 87-year-old Floyd Zumwalt is clubbed to death with a baseball bat; it's ultimately a single drop of blood splatter and a pair of missing pants that lead detectives to the killer.

A Virginia man insists, What's mine is mine, and what's yours is mine.

Using technology to solve crime.

Team One believes a bomb is just the first in a war between rival biker gangs.

A Virginia man insists, What's mine is mine, and what's yours is mine.

Using technology to solve crime.

Team One believes a bomb is just the first in a war between rival biker gangs.

A Virginia man insists, What's mine is mine, and what's yours is mine.

Team One believes a bomb is just the first in a war between rival biker gangs.

Using technology to solve crime.

A drive-by shooting at the church pulls Lena and Danny into the complicated past of one of Reverend Peters' associates; Mae faces painful revelations about her family; the team manages internal friction.

Now that Elijah and Abril have become allies, the team must rely on Monica, Elijah's lawyer, to uncover their plans; Officers Nolan and Juarez reopen her sister's case and discover a discrepancy that leads them on a new trail.

When Dim goes missing, Officer Chen and Sgt. Bradford, along with the CIA, set out to find him and enlist the help of Juicy.

The team investigates a pattern of kidnappings, which leads them to a discovery that hits close to home with one of their own; Lucy and Tim's relationship is put to the test as they begin to feel the hard hours of their jobs.

Officer Tim Bradford's ex-wife returns and asks the team to help her save someone from her undercover past; Isabel's return also creates additional pressure in Lucy and Tim's relationship as they assist in the search.

A drive-by shooting at the church pulls Lena and Danny into the complicated past of one of Reverend Peters' associates; Mae faces painful revelations about her family; the team manages internal friction.

Randy enlists Colter's help when one of his closest friends vanishes while under house arrest.

Angelo's worlds collide, setting up a confrontation with The Ferryman.

Now that Elijah and Abril have become allies, the team must rely on Monica, Elijah's lawyer, to uncover their plans; Officers Nolan and Juarez reopen her sister's case and discover a discrepancy that leads them on a new trail.

Randy enlists Colter's help when one of his closest friends vanishes while under house arrest.

Angelo's worlds collide, setting up a confrontation with The Ferryman.

Officer Tim Bradford's ex-wife returns and asks the team to help her save someone from her undercover past; Isabel's return also creates additional pressure in Lucy and Tim's relationship as they assist in the search.

Officer Lucy Chen goes undercover to infiltrate an illegal firearm operation; Detective Harper and Officer John Nolan work together to solve a mystery involving severed limbs found around the city.

After one of their own is shot, the team suffers a series of close calls and realizes their division may be a target for a group of masked assailants.

The team must stop a militia from detonating a highly combustible truck in their possession; Nolan, Thorson, Juarez and Harper search for three men who may have been exposed to Ebola.

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

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

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.

Bunny comes to Lindsay with a concern that leads the team to a case that robbery-homicide has been investigating; Voight is suspicious of Bunny's motives.

Burgess and Roman become trapped after Burgess pursues suspicious activity at a convenience store without calling in for backup; the intelligence team receives taser certification.

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.

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.

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.

Bunny comes to Lindsay with a concern that leads the team to a case that robbery-homicide has been investigating; Voight is suspicious of Bunny's motives.

Burgess and Roman become trapped after Burgess pursues suspicious activity at a convenience store without calling in for backup; the intelligence team receives taser certification.

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.

Martin must toggle between the potential revelation of his blood phobia, a startling baby delivery and the arrival of his amorous ex; Louisa receives some thought-provoking medical results; Al and Elaine must navigate their uncertain future.

Randy enlists Colter's help when one of his closest friends vanishes while under house arrest.

Angelo's worlds collide, setting up a confrontation with The Ferryman.

In a high-crime Seattle suburb, 87-year-old Floyd Zumwalt is clubbed to death with a baseball bat; it's ultimately a single drop of blood splatter and a pair of missing pants that lead detectives to the killer.

Martin must toggle between the potential revelation of his blood phobia, a startling baby delivery and the arrival of his amorous ex; Louisa receives some thought-provoking medical results; Al and Elaine must navigate their uncertain future.

Burgess and Roman become trapped after Burgess pursues suspicious activity at a convenience store without calling in for backup; the intelligence team receives taser certification.

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.

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.

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.

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

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

The disappearance of millionaire Frank Black.

While completing a task assigned by headquarters, Boden makes an unforeseen connection; Gallo is forced to make a surprise rescue of one of their own when the firehouse is called to the site of a construction explosion; Mouch reignites an old feud.

When Firehouse 51 is called to the scene of a dangerous blaze inside a 10-story storage unit, Herrmann and Cruz find themselves trapped inside a freight elevator with all communications cut off.

Gallo makes a split-second decision during a dangerous fire rescue, leaving Casey steaming that his direct orders weren't obeyed; Kidd feels a strain in her relationship with Severide; Brett and Mackey search for answers after some suspicious calls.

A fire at a homeless encampment leaves Severide and Casey searching for answers; Cruz is shaken up after a close call; Ritter lends a helping hand to a victim.

A call to a familiar location brings back mixed emotions for Severide; Herrmann heads out for a vacation; Casey is not thrilled with his replacement.

Mouch, Gallo, Ritter and Mackey report for training; a nasty blow to the head brings Casey unimaginable pain.

A series of suspicious fires sends 51 on a search for the cause; Casey continues down a troubling path; Mouch is looking to make his long-awaited dream come true.

While completing a task assigned by headquarters, Boden makes an unforeseen connection; Gallo is forced to make a surprise rescue of one of their own when the firehouse is called to the site of a construction explosion; Mouch reignites an old feud.

When Firehouse 51 is called to the scene of a dangerous blaze inside a 10-story storage unit, Herrmann and Cruz find themselves trapped inside a freight elevator with all communications cut off.

Gallo makes a split-second decision during a dangerous fire rescue, leaving Casey steaming that his direct orders weren't obeyed; Kidd feels a strain in her relationship with Severide; Brett and Mackey search for answers after some suspicious calls.

A fire at a homeless encampment leaves Severide and Casey searching for answers; Cruz is shaken up after a close call; Ritter lends a helping hand to a victim.

A call to a familiar location brings back mixed emotions for Severide; Herrmann heads out for a vacation; Casey is not thrilled with his replacement.

Mouch, Gallo, Ritter and Mackey report for training; a nasty blow to the head brings Casey unimaginable pain.

A series of suspicious fires sends 51 on a search for the cause; Casey continues down a troubling path; Mouch is looking to make his long-awaited dream come true.

While completing a task assigned by headquarters, Boden makes an unforeseen connection; Gallo is forced to make a surprise rescue of one of their own when the firehouse is called to the site of a construction explosion; Mouch reignites an old feud.

When Firehouse 51 is called to the scene of a dangerous blaze inside a 10-story storage unit, Herrmann and Cruz find themselves trapped inside a freight elevator with all communications cut off.

Gallo makes a split-second decision during a dangerous fire rescue, leaving Casey steaming that his direct orders weren't obeyed; Kidd feels a strain in her relationship with Severide; Brett and Mackey search for answers after some suspicious calls.

A fire at a homeless encampment leaves Severide and Casey searching for answers; Cruz is shaken up after a close call; Ritter lends a helping hand to a victim.

A call to a familiar location brings back mixed emotions for Severide; Herrmann heads out for a vacation; Casey is not thrilled with his replacement.

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

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

A handyman, living rent-free in the home of a generous friend, grows increasingly paranoid about his neighbors; filming them constantly and fighting with them incessantly until conflict escalates out of control and culminates in explosive violence.

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

A young man is forced to infiltrate a research facility to memorize the design of a new "smart gun.".

A handyman, living rent-free in the home of a generous friend, grows increasingly paranoid about his neighbors; filming them constantly and fighting with them incessantly until conflict escalates out of control and culminates in explosive violence.

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

A young man is forced to infiltrate a research facility to memorize the design of a new "smart gun.".

A handyman, living rent-free in the home of a generous friend, grows increasingly paranoid about his neighbors; filming them constantly and fighting with them incessantly until conflict escalates out of control and culminates in explosive violence.

A young man is forced to infiltrate a research facility to memorize the design of a new "smart gun.".

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

A new recruit with ties to the CFD tests Severide's patience; Violet receives a mysterious note that sends her and Brett on a hunt for the person who wrote it.

While Mouch makes an incredible save, all eyes are on a mystery man who helped save his neighbor; Casey worries about his future at the CFD.

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.

A fire breaks out at a pet food factory, and Casey and Severide help the owner, Pete, get to the bottom of it; the annual garage sale takes place at 51 and everyone is on edge.

Severide and Casey try to find the best fit for Kidd; Ritter, Gallo and Violet help plan an event for Mouch.

The firehouse reacts to some exciting news; a mysterious stranger arrives, and a shocking call takes Severide's breath away.

Martin and Vicki must pull off the con of a lifetime to save their skins and their company.

When Battle's arrested, Bumpy must find a way to spring him and find the mole; Bumpy discovers that Malcolm X has more enemies than they thought.

Bumpy uncovers a CIA plot to assassinate Malcolm X and Che Guevara at the United Nations; Malcolm writes his autobiography; Olympia utilizes Father Louis to get out of trouble.

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.

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.

A fire breaks out at a pet food factory, and Casey and Severide help the owner, Pete, get to the bottom of it; the annual garage sale takes place at 51 and everyone is on edge.

Martin and Vicki must pull off the con of a lifetime to save their skins and their company.

Martin and Vicki must pull off the con of a lifetime to save their skins and their company.

When Battle's arrested, Bumpy must find a way to spring him and find the mole; Bumpy discovers that Malcolm X has more enemies than they thought.

Bumpy uncovers a CIA plot to assassinate Malcolm X and Che Guevara at the United Nations; Malcolm writes his autobiography; Olympia utilizes Father Louis to get out of trouble.

Two women with a shared wall between their townhouses become increasingly volatile with each other; food fights, physical altercations and vandalism come to a bloody climax.

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

Team One races to track down an armored truck that has vanished.

Two women with a shared wall between their townhouses become increasingly volatile with each other; food fights, physical altercations and vandalism come to a bloody climax.

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

Team One races to track down an armored truck that has vanished.

Two women with a shared wall between their townhouses become increasingly volatile with each other; food fights, physical altercations and vandalism come to a bloody climax.

Team One races to track down an armored truck that has vanished.

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

After a 10-year-old boy is admitted to the hospital, Dr. Manning and Dr. Halstead disagree on how to handle the boy's parents; Dr. Rhodes rushes to fix a heart that will be given to Dr. Reese's estranged father.

After a shooting occurs during a block party, the staff is overrun with victims; Dr. Choi devises a new mass casualty plan; Dr. Manning struggles to stay focused when she realizes her son and nanny might have been at the scene.

Dr. Manning rushes to save a boy who has a life-threatening case of the flu; April suspects Dr. Choi's sister of stealing opioid pain killers; Dr. Rhodes and Dr. Bekker disagree over the best treatment for a cardiac patient who is 21 weeks pregnant.

Dr. Rhodes second guesses removing himself from the team working to separate conjoined twins; Dr. Choi and April make a startling discovery about his sister; Dr. Charles uncovers troubling information concerning Dr. Reese's father.

Bekker takes drastic action to keep Rhodes from leaving Med for good; Halstead questions Manning's feelings about their upcoming wedding; Ethan receives shocking news about his sister, Emily; Charles mourns a loss.

Chicago Med, Fire and P.D. cross paths when a high-rise fire floods Med with victims, including Will and Jay Halstead's father; Rhodes must save the life and career of Stella Kidd; Manning treats a burn victim; Charles assesses a distraught Otis.

Halstead arranges a great deal on a wedding venue; Manning and Elsa treat an ill pregnant woman convinced that God will save her; the staff is conflicted about the law-breaking father of a 5-year-old patient; Rhodes opens his hybrid OR early.

Mary Jane searches Davis' office to differentiate real intel from planted misinformation; nearly caught, Mary Jane hurries to write notes for Jericho to deliver to their cohort.

After a shooting occurs during a block party, the staff is overrun with victims; Dr. Choi devises a new mass casualty plan; Dr. Manning struggles to stay focused when she realizes her son and nanny might have been at the scene.

Dr. Manning rushes to save a boy who has a life-threatening case of the flu; April suspects Dr. Choi's sister of stealing opioid pain killers; Dr. Rhodes and Dr. Bekker disagree over the best treatment for a cardiac patient who is 21 weeks pregnant.

Dr. Rhodes second guesses removing himself from the team working to separate conjoined twins; Dr. Choi and April make a startling discovery about his sister; Dr. Charles uncovers troubling information concerning Dr. Reese's father.

Bekker takes drastic action to keep Rhodes from leaving Med for good; Halstead questions Manning's feelings about their upcoming wedding; Ethan receives shocking news about his sister, Emily; Charles mourns a loss.

Chicago Med, Fire and P.D. cross paths when a high-rise fire floods Med with victims, including Will and Jay Halstead's father; Rhodes must save the life and career of Stella Kidd; Manning treats a burn victim; Charles assesses a distraught Otis.

Jon Hamm gets fans ready for season 2 of "Your Friends & Neighbors"; Amanda Peet lets us in on her "Fantasy Life.".

Mary Jane searches Davis' office to differentiate real intel from planted misinformation; nearly caught, Mary Jane hurries to write notes for Jericho to deliver to their cohort.

A former cop is moving into a close-knit neighborhood; conflict arises with the whole community over dogs, noise, and other disturbances that keep piling on and ratcheting up until a boiling point is reached, guns are drawn, and blood is spilled.

A private school owner is kidnapped.

While Dean and Clark go on a ride-along, a shootout breaks out at a drug den.

A former cop is moving into a close-knit neighborhood; conflict arises with the whole community over dogs, noise, and other disturbances that keep piling on and ratcheting up until a boiling point is reached, guns are drawn, and blood is spilled.

A private school owner is kidnapped.

While Dean and Clark go on a ride-along, a shootout breaks out at a drug den.

A former cop is moving into a close-knit neighborhood; conflict arises with the whole community over dogs, noise, and other disturbances that keep piling on and ratcheting up until a boiling point is reached, guns are drawn, and blood is spilled.

While Dean and Clark go on a ride-along, a shootout breaks out at a drug den.

A private school owner is kidnapped.

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.

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.

Maggie's residency gets off to a rocky start as Cal shows Ben the ropes at the Crossing and begins to wonder if Liam has any intention of leaving.

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.

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

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.

Maggie's residency gets off to a rocky start as Cal shows Ben the ropes at the Crossing and begins to wonder if Liam has any intention of leaving.

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

A former police chief gets into constant conflicts with a young renter who doesn't respect his authority; the war between them intensifies until blood flows down their street.

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

Team One races to catch a disturbed and armed man on a ferry.

A former police chief gets into constant conflicts with a young renter who doesn't respect his authority; the war between them intensifies until blood flows down their street.

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

Team One races to catch a disturbed and armed man on a ferry.

A former police chief gets into constant conflicts with a young renter who doesn't respect his authority; the war between them intensifies until blood flows down their street.

Team One races to catch a disturbed and armed man on a ferry.

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

Halstead is backed into a corner after unknowingly making a deal with a gangster; Manning fights for her dying patient, who is not a U.S. citizen; Rhodes and Bekker clash in the OR; Choi is shocked when he meets Emily's new boyfriend.

Halstead's first task as a criminal informant puts a strain on his relationship with Manning; Choi is shocked when the father of Emily's child ends up in the ED; Rhodes presses Bekker to reveal who anonymously donated funds for his satellite OR.

Manning and Halstead must act fast to save the life of a physically abused wife; Choi and April are shocked to learn the truth about their 14-year-old cirrhosis patient; Rhodes and Lanik go head-to-head in the ER.

After a deadly chemical spill, the ED goes on lockdown, threatening the lives of several patients and leaving one of Med's own hanging in the balance; Rhodes and Manning must perform lifesaving surgeries.

Choi and Charles use trickery to help a patient with an itch she can't help but scratch; Halstead and Manning argue over a tattooed coma patient; Rhodes angers Goodwin by going against orders to save a patient in the hybrid OR.

Halstead and Manning's wedding day is interrupted when Halstead is forced to make a house call; Charles treats a woman who stabbed her husband; Choi and April deliver a breech baby; Rhodes and Bekker operate on an FBI witness.

A shooting outside the hospital injures April and leaves the ED shaken up; Halstead returns after a stint in the witness relocation program; Charles and Elsa have an emotional confrontation; Bekker is reluctant to attend an event honoring Rhodes.

When an attempted armed robbery ends in murder, U.K. detectives must connect the dots between hours of surveillance video.

Halstead's first task as a criminal informant puts a strain on his relationship with Manning; Choi is shocked when the father of Emily's child ends up in the ED; Rhodes presses Bekker to reveal who anonymously donated funds for his satellite OR.

Manning and Halstead must act fast to save the life of a physically abused wife; Choi and April are shocked to learn the truth about their 14-year-old cirrhosis patient; Rhodes and Lanik go head-to-head in the ER.

After a deadly chemical spill, the ED goes on lockdown, threatening the lives of several patients and leaving one of Med's own hanging in the balance; Rhodes and Manning must perform lifesaving surgeries.

Choi and Charles use trickery to help a patient with an itch she can't help but scratch; Halstead and Manning argue over a tattooed coma patient; Rhodes angers Goodwin by going against orders to save a patient in the hybrid OR.

Halstead and Manning's wedding day is interrupted when Halstead is forced to make a house call; Charles treats a woman who stabbed her husband; Choi and April deliver a breech baby; Rhodes and Bekker operate on an FBI witness.

A shooting outside the hospital injures April and leaves the ED shaken up; Halstead returns after a stint in the witness relocation program; Charles and Elsa have an emotional confrontation; Bekker is reluctant to attend an event honoring Rhodes.

When an attempted armed robbery ends in murder, U.K. detectives must connect the dots between hours of surveillance video.

Complaints about dogs running loose lead to the construction of a fence between two long-time neighbors, but the problem isn't solved and flaring tempers lead to fist fights, stabbings, and ultimately a shocking shootout captured on video.

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

A series of bombs tears the city apart, as Team One attempts high-risk rescues.

Complaints about dogs running loose lead to the construction of a fence between two long-time neighbors, but the problem isn't solved and flaring tempers lead to fist fights, stabbings, and ultimately a shocking shootout captured on video.

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

A series of bombs tears the city apart, as Team One attempts high-risk rescues.

Complaints about dogs running loose lead to the construction of a fence between two long-time neighbors, but the problem isn't solved and flaring tempers lead to fist fights, stabbings, and ultimately a shocking shootout captured on video.

A series of bombs tears the city apart, as Team One attempts high-risk rescues.

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

Sean and Jonah go undercover to track down a dangerous new threat affecting Boston's young adults, forcing Sean to confront unresolved ties from his past along the way.

The team comes together to celebrate John and Bailey's wedding; Celina discovers a discrepancy in her case, leading to a new discovery; Lucy and Tim's relationship is put to the test.

Nolan and Bailey's honeymoon is more of a nightmare than a dream when it turns into an active crime scene; Tim and Celina partner up and must uncover the identity of a John Doe.

It's Officer Aaron Thorsen's first day back since the assault, and he's tasked with a series of high-stress cases to determine whether he's ready to work; the team investigates a homicide case with a potential tie to the pentagram killer.

When a toddler is found at the scene of a crime, John and Bailey must decide whether to let the child go to a shelter for the night or care for her themselves; when someone from his past returns, Tim disappears and leaves Lucy in the dark.

Sean and Jonah go undercover to track down a dangerous new threat affecting Boston's young adults, forcing Sean to confront unresolved ties from his past along the way.

A pregnant wife reaches out to Colter to find her missing husband.

The team must try to understand why they were targeted and if there is a bigger plan in place; Nolan must survive his last shift before his wedding to Bailey.

The team comes together to celebrate John and Bailey's wedding; Celina discovers a discrepancy in her case, leading to a new discovery; Lucy and Tim's relationship is put to the test.

A pregnant wife reaches out to Colter to find her missing husband.

It's Officer Aaron Thorsen's first day back since the assault, and he's tasked with a series of high-stress cases to determine whether he's ready to work; the team investigates a homicide case with a potential tie to the pentagram killer.

When a toddler is found at the scene of a crime, John and Bailey must decide whether to let the child go to a shelter for the night or care for her themselves; when someone from his past returns, Tim disappears and leaves Lucy in the dark.

Following their time as foster parents, Bailey wants to have a baby and forces John to reconsider their decision to not have children; John and Celina discover a prison escapee whom they fear is out for revenge and race to find her.

When two teenagers go missing, it is up to the entire team to find the girls and uncover the truth about their disappearance; Lopez and Harper search for the perfect nanny.

The team must try to understand why they were targeted and if there is a bigger plan in place; Nolan must survive his last shift before his wedding to Bailey.

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

Ontario police conduct a manhunt for the prime suspects in four brutal murders.

A nurse is the main suspect of five bodies found in a wooded area in central Florida.

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.

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.

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.

A pregnant wife reaches out to Colter to find her missing husband.

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.

When an attempted armed robbery ends in murder, U.K. detectives must connect the dots between hours of surveillance video.

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.

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.

A search mission for three women missing in Yosemite Park turns to a murder investigation when two are discovered in the trunk of their burned out car.

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.

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

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.

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

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.