The investigation into the murder of a sex offender leads to a private police force operating independently of the Chicago PD; Halstead checks Jimmy's DNA to find out if he really is Lindsay's father.

A priest and parishioners block law enforcement from entering a church where two murder suspects are suspected of hiding; Rixton is caught in a lie with Voight.

When the crushed body of a young teen who ran away from a treatment center for troubled girls is found in an abandoned building, Voight sends Halstead under cover as a guard to investigate the center from the inside.

The team investigates a home explosion that left a charred body, one injured survivor and no witnesses; Lindsay and Halstead receive a strange warning about Rixton.

Olinsky goes under cover as a hit man for hire after Lindsay is tipped off about a grieving father looking to avenge his daughter's death; when Ruzek returns from his undercover assignment, Voight puts him on patrol duty.

Olinsky's daughter is in critical condition following a massive warehouse fire; Voight investigates the fire's potential origins; intelligence examines connections between the building owner, those who were inside, and potential arson suspects.

The members of Firehouse 51 and the Austin firehouse clash when trucks collide on the way to a call; Boden comes up with a plan to get Dawson her badge; Mills faces his past and future; the Molly's group hits a speed bump starting the food truck.

Dawson tries to find balance with Lt. Casey; Mills deals with a future without the squad; Severide faces his demons; the Molly's crew meets with a city inspector.

Casey deals with the fallout from his sister's divorce; Dawson and Mills settle into their new roles at the station; Brett can't decide what she wants to do; the Molly's crew struggles to get the food truck started.

Casey helps his sister and faces down his corrupt brother-in-law; Brett goes out of her way to assist a mother in need; Mills learns about unlicensed private investigation; Dawson starts training with Herrmann.

Severide wants further investigation when a homeowner saved from a fire is found clutching a suspicious box; Molly's II needs a chef.

The members of the firehouse spring into action when a helicopter explodes over a densely populated area, scattering debris; a dangerous man corners Brett.

Dawson and Casey's relationship is tested as the team responds to a truck leaking hydrochloric acid in a busy intersection; Severide learns about Brittany's past; Mouch has dating troubles.

A house fire puts a couple in danger; Dawson and Casey are pushed apart; the Chicago Holiday Fest gives Molly's II a chance to shine.

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.

The members of Firehouse 51 and the Austin firehouse clash when trucks collide on the way to a call; Boden comes up with a plan to get Dawson her badge; Mills faces his past and future; the Molly's group hits a speed bump starting the food truck.

Dawson tries to find balance with Lt. Casey; Mills deals with a future without the squad; Severide faces his demons; the Molly's crew meets with a city inspector.

Casey deals with the fallout from his sister's divorce; Dawson and Mills settle into their new roles at the station; Brett can't decide what she wants to do; the Molly's crew struggles to get the food truck started.

Casey helps his sister and faces down his corrupt brother-in-law; Brett goes out of her way to assist a mother in need; Mills learns about unlicensed private investigation; Dawson starts training with Herrmann.

Severide wants further investigation when a homeowner saved from a fire is found clutching a suspicious box; Molly's II needs a chef.

The members of the firehouse spring into action when a helicopter explodes over a densely populated area, scattering debris; a dangerous man corners Brett.

Dawson and Casey's relationship is tested as the team responds to a truck leaking hydrochloric acid in a busy intersection; Severide learns about Brittany's past; Mouch has dating troubles.

A house fire puts a couple in danger; Dawson and Casey are pushed apart; the Chicago Holiday Fest gives Molly's II a chance to shine.

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.

The members of Firehouse 51 and the Austin firehouse clash when trucks collide on the way to a call; Boden comes up with a plan to get Dawson her badge; Mills faces his past and future; the Molly's group hits a speed bump starting the food truck.

Dawson tries to find balance with Lt. Casey; Mills deals with a future without the squad; Severide faces his demons; the Molly's crew meets with a city inspector.

Casey deals with the fallout from his sister's divorce; Dawson and Mills settle into their new roles at the station; Brett can't decide what she wants to do; the Molly's crew struggles to get the food truck started.

Casey helps his sister and faces down his corrupt brother-in-law; Brett goes out of her way to assist a mother in need; Mills learns about unlicensed private investigation; Dawson starts training with Herrmann.

Severide wants further investigation when a homeowner saved from a fire is found clutching a suspicious box; Molly's II needs a chef.

The members of the firehouse spring into action when a helicopter explodes over a densely populated area, scattering debris; a dangerous man corners Brett.

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 notorious gang appears to be involved in the murder of a police informant; Detective Rosati reveals something that puts Andy's relationship with Luke in danger.

An innocent bystander creates complications for the team when he stumbles into the middle of a drug bust.

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 notorious gang appears to be involved in the murder of a police informant; Detective Rosati reveals something that puts Andy's relationship with Luke in danger.

An innocent bystander creates complications for the team when he stumbles into the middle of a drug bust.

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 notorious gang appears to be involved in the murder of a police informant; Detective Rosati reveals something that puts Andy's relationship with Luke in danger.

An innocent bystander creates complications for the team when he stumbles into the middle of a drug bust.

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.

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.

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.

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.

June and Luke embark on a dangerous quest; Serena gets to know her new hosts.

June and Luke embark on a dangerous quest; Serena gets to know her new hosts.

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).

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.

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.

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.

As the club prepares for a defining night, Kate finds unexpected allies in her pursuit of power; Violet seeks revenge for Lily; Billie weighs up her future.

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.

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.

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.

In financial trouble, a woman rents out rooms in her home to two men, which leads to a toxic mix of misgivings, madness and murder.

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

The team must set their personal beliefs aside when they go to rescue a cop being held hostage by an enraged family member.

In financial trouble, a woman rents out rooms in her home to two men, which leads to a toxic mix of misgivings, madness and murder.

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

The team must set their personal beliefs aside when they go to rescue a cop being held hostage by an enraged family member.

In financial trouble, a woman rents out rooms in her home to two men, which leads to a toxic mix of misgivings, madness and murder.

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

The team must set their personal beliefs aside when they go to rescue a cop being held hostage by an enraged family member.

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.

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.

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.

June and Luke's mission puts them in serious jeopardy; Serena senses a threat from her benefactors; Lawrence and Nick make a shocking power move.

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.

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.

Two college students rent an apartment off campus together, but the two women couldn't be more different; squabbles escalate into an all-out war, and the presence of a boyfriend causes the feud to boil over into a deadly fight.

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

Sgt. Parker faces one of his toughest negotiations yet when the SRU tries to resolve a hostage situation at a bank, then finds that the suspect doesn't fit the original profile.

Two college students rent an apartment off campus together, but the two women couldn't be more different; squabbles escalate into an all-out war, and the presence of a boyfriend causes the feud to boil over into a deadly fight.

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

Sgt. Parker faces one of his toughest negotiations yet when the SRU tries to resolve a hostage situation at a bank, then finds that the suspect doesn't fit the original profile.

Two college students rent an apartment off campus together, but the two women couldn't be more different; squabbles escalate into an all-out war, and the presence of a boyfriend causes the feud to boil over into a deadly fight.

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

Sgt. Parker faces one of his toughest negotiations yet when the SRU tries to resolve a hostage situation at a bank, then finds that the suspect doesn't fit the original profile.

The 118 races to save the lives of workers trapped in a factory fire; Maddie reveals a painful family secret that causes Buck to confront his childhood and answer why he is the daredevil he is today.

The 118 has a day from hell with a never-ending series of bizarre emergency calls; a man tapes himself to a freeway billboard; a restaurant manager destroys his own business; Eddie feels a spark with Christopher's former teacher.

A man gets pinned under a Humvee; a garage band rocks out too hard; Michael notices strange behavior at a nearby apartment; Hen's mother unexpectedly arrives and announces she is moving to Los Angeles.

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

Athena and the 118 race to save lives after a drunken driver causes a deadly pileup on the freeway; Maddie goes into labor; Hen and Karen are devastated as they prepare their foster daughter to be reunited with her birth mother.

The 118 responds to calls dealing with parents and their children, including a disastrous birthday party thrown by a mommy blogger; Athena and Michael talk to May about her past suicide attempt; Chimney and Maddie adjust to life with their newborn.

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.

The 118 races to save the lives of workers trapped in a factory fire; Maddie reveals a painful family secret that causes Buck to confront his childhood and answer why he is the daredevil he is today.

June and Serena find themselves in a desperate situation.

A man gets pinned under a Humvee; a garage band rocks out too hard; Michael notices strange behavior at a nearby apartment; Hen's mother unexpectedly arrives and announces she is moving to Los Angeles.

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

Athena and the 118 race to save lives after a drunken driver causes a deadly pileup on the freeway; Maddie goes into labor; Hen and Karen are devastated as they prepare their foster daughter to be reunited with her birth mother.

The 118 responds to calls dealing with parents and their children, including a disastrous birthday party thrown by a mommy blogger; Athena and Michael talk to May about her past suicide attempt; Chimney and Maddie adjust to life with their newborn.

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.

The 118 races to save the lives of workers trapped in a factory fire; Maddie reveals a painful family secret that causes Buck to confront his childhood and answer why he is the daredevil he is today.

A hospital worker invites a colleague (who's fallen on hard times) to come live with her. But the good deed backfires, and it only takes a few weeks before a stealthy betrayal turns into a gruesome crime.

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

Teen gang members seek revenge after a troubled classmate makes accusations of rape.

A hospital worker invites a colleague (who's fallen on hard times) to come live with her. But the good deed backfires, and it only takes a few weeks before a stealthy betrayal turns into a gruesome crime.

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

Teen gang members seek revenge after a troubled classmate makes accusations of rape.

A hospital worker invites a colleague (who's fallen on hard times) to come live with her. But the good deed backfires, and it only takes a few weeks before a stealthy betrayal turns into a gruesome crime.

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

Teen gang members seek revenge after a troubled classmate makes accusations of rape.

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.

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.

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.

June considers a tempting but risky offer from a surprise visitor; Serena hits rock bottom and searches for allies.

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.

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.

Two women strike up a fast friendship and move in together; a lack of privacy and a secret relationship rips apart the harmony; a battle for control ends in a brutal murder.

Using technology to solve crime.

After a violent altercation with his father, a young man flees the police and runs into the woods, sending the team on a manhunt.

Two women strike up a fast friendship and move in together; a lack of privacy and a secret relationship rips apart the harmony; a battle for control ends in a brutal murder.

Using technology to solve crime.

After a violent altercation with his father, a young man flees the police and runs into the woods, sending the team on a manhunt.

Two women strike up a fast friendship and move in together; a lack of privacy and a secret relationship rips apart the harmony; a battle for control ends in a brutal murder.

Using technology to solve crime.

After a violent altercation with his father, a young man flees the police and runs into the woods, sending the team on a manhunt.

A hiker leads intelligence to a young woman being held captive in the woods near Chicago; a former relationship of Halstead's comes back into the picture, much to the surprise of Lindsay.

The investigation leads Intelligence to one of Chicago's wealthiest families after a nighttime photographer is murdered over a piece of mysterious footage; Burgess' sister Nicole visits the district and presents an icy attitude toward Ruzek.

When Burgess realizes that her sister, Nicole, never made it home after a night out with friends, the members of the intelligence team make finding Nicole their top priority.

The murder weapon in the killing of a teenage boy is linked to a case Voight worked on 17 years ago; the victim's father wants Area Central Homicide to take the case.

Intelligence investigates armed bank robberies, which point to some surprising suspects; Lindsay is forced to make a decision in the heat of the moment.

Spring break hits The Odyssey as three college vixens set their sights on Max; Tristan faces his drinking problem while other passengers' struggles keep the medical team on their toes.

Colter recruits fellow rewardist Billie Matalon to infiltrate a women's prison in order to gain access to critical information that would help track down an escaped prisoner and her hostage.

While grappling with his own trauma, Will goes under cover at a suspicious wellness community to uncover the truth behind the organization and investigate a string of deaths tied to its members.

June and Luke prepare for a rescue mission; Serena tries new tactics with her oppressive hosts; Lawrence makes a surprising proposal to elevate his status.

Colter recruits fellow rewardist Billie Matalon to infiltrate a women's prison in order to gain access to critical information that would help track down an escaped prisoner and her hostage.

While grappling with his own trauma, Will goes under cover at a suspicious wellness community to uncover the truth behind the organization and investigate a string of deaths tied to its members.

Spring break hits The Odyssey as three college vixens set their sights on Max; Tristan faces his drinking problem while other passengers' struggles keep the medical team on their toes.

When Burgess realizes that her sister, Nicole, never made it home after a night out with friends, the members of the intelligence team make finding Nicole their top priority.

The murder weapon in the killing of a teenage boy is linked to a case Voight worked on 17 years ago; the victim's father wants Area Central Homicide to take the case.

Intelligence investigates armed bank robberies, which point to some surprising suspects; Lindsay is forced to make a decision in the heat of the moment.

The disappearance of millionaire Frank Black.

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 vigilante posts a video online of a man, previously locked up for statutory rape, being beaten and burned alive; Lindsay encounters some personal and professional problems.

Lindsay's mother, Bunny, becomes a murder suspect when her boyfriend is shot; high school students overdose on drugs; Lindsay finds herself up against the review board.

A young bystander is shot during a difficult operation; Chief Lugo reviews the shootout and Halstead becomes a key player in the outcome.

A patrol officer becomes a suspect when a van explodes during a Chicago street festival; Burgess, who helped train the officer, is desperate to prove his innocence.

The investigation into a murder of an illegal immigrant is hampered by the perception of police among the city's immigrant population.

The investigation into a drug-related homicide is hampered by the neighborhood's no-snitch culture; Upton is asked about Ruzek's rough altercation with a suspect.

A meth lab bust uncovers a scam in which children adopted from foreign countries are abandoned, then sold online; Atwater struggles with decisions about moving his siblings to a safer environment.

A vigilante posts a video online of a man, previously locked up for statutory rape, being beaten and burned alive; Lindsay encounters some personal and professional problems.

Lindsay's mother, Bunny, becomes a murder suspect when her boyfriend is shot; high school students overdose on drugs; Lindsay finds herself up against the review board.

A young bystander is shot during a difficult operation; Chief Lugo reviews the shootout and Halstead becomes a key player in the outcome.

A patrol officer becomes a suspect when a van explodes during a Chicago street festival; Burgess, who helped train the officer, is desperate to prove his innocence.

The investigation into a murder of an illegal immigrant is hampered by the perception of police among the city's immigrant population.

The investigation into a drug-related homicide is hampered by the neighborhood's no-snitch culture; Upton is asked about Ruzek's rough altercation with a suspect.

A meth lab bust uncovers a scam in which children adopted from foreign countries are abandoned, then sold online; Atwater struggles with decisions about moving his siblings to a safer environment.

A vigilante posts a video online of a man, previously locked up for statutory rape, being beaten and burned alive; Lindsay encounters some personal and professional problems.

Lindsay's mother, Bunny, becomes a murder suspect when her boyfriend is shot; high school students overdose on drugs; Lindsay finds herself up against the review board.

A young bystander is shot during a difficult operation; Chief Lugo reviews the shootout and Halstead becomes a key player in the outcome.

A patrol officer becomes a suspect when a van explodes during a Chicago street festival; Burgess, who helped train the officer, is desperate to prove his innocence.

The investigation into a murder of an illegal immigrant is hampered by the perception of police among the city's immigrant population.

The investigation into a drug-related homicide is hampered by the neighborhood's no-snitch culture; Upton is asked about Ruzek's rough altercation with a suspect.

A meth lab bust uncovers a scam in which children adopted from foreign countries are abandoned, then sold online; Atwater struggles with decisions about moving his siblings to a safer environment.

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 under cover 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.

During an undercover operation, Lt. Casey lands in very dangerous territory; Dawson's suspicions are confirmed; a new candidate (Steven R. McQueen) makes an unusual first impression; a protest hinders firefighters who are trying to battle a blaze.

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.

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 under cover 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.

During an undercover operation, Lt. Casey lands in very dangerous territory; Dawson's suspicions are confirmed; a new candidate (Steven R. McQueen) makes an unusual first impression; a protest hinders firefighters who are trying to battle a blaze.

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.

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 under cover 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.

A man rents out a room to an old buddy, but their contrasting living habits create chaos in the house; tiny arguments turn into petty crimes, resulting in a vicious fight that turns deadly.

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

A member of the team is caught in the wrong place at the wrong time when a young man holds a courtroom hostage in an attempt to clear his name for a murder he didn't commit.

A man rents out a room to an old buddy, but their contrasting living habits create chaos in the house; tiny arguments turn into petty crimes, resulting in a vicious fight that turns deadly.

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

A member of the team is caught in the wrong place at the wrong time when a young man holds a courtroom hostage in an attempt to clear his name for a murder he didn't commit.

A man rents out a room to an old buddy, but their contrasting living habits create chaos in the house; tiny arguments turn into petty crimes, resulting in a vicious fight that turns deadly.

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

A member of the team is caught in the wrong place at the wrong time when a young man holds a courtroom hostage in an attempt to clear his name for a murder he didn't commit.

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.

Members of Firehouse 51 are unhappy when Patterson fills in for Boden while he tries to clear his name; Severide may have found Serena; Chili and Jimmy attract more attention than they expected.

A member of Firehouse 51 is treated for life-threatening injuries; Cruz searches for Freddie; Mouch has a surprise for Trudy; Chili's behavior worries Brett and Jimmy.

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.

Under threat, June must find a way to keep herself and her family safe from Gilead and its violent supporters in Toronto.

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.

A member of Firehouse 51 is treated for life-threatening injuries; Cruz searches for Freddie; Mouch has a surprise for Trudy; Chili's behavior worries Brett and Jimmy.

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.

A young woman moves out of her parents' house and in with her boss, but freedom comes with a cost, and when she is unable to pay, she loses control, and death follows.

Killers attempt to use the elements to cover their crimes.

Jules puts her negotiating skills to the test when the unit responds to a kidnapping, only to find that there are actually two victims.

A young woman moves out of her parents' house and in with her boss, but freedom comes with a cost, and when she is unable to pay, she loses control, and death follows.

Killers attempt to use the elements to cover their crimes.

Jules puts her negotiating skills to the test when the unit responds to a kidnapping, only to find that there are actually two victims.

A young woman moves out of her parents' house and in with her boss, but freedom comes with a cost, and when she is unable to pay, she loses control, and death follows.

Killers attempt to use the elements to cover their crimes.

Jules puts her negotiating skills to the test when the unit responds to a kidnapping, only to find that there are actually two victims.

Halstead relies on Marcel and Med's newly donated OR 2.0 to save his patient; Charles helps an elderly, confused patient who's mourning the loss of his high school sweetheart; as their wedding day approaches, Choi and April run into some roadblocks.

Charles and Cuevas help an elderly patient and her developmentally disabled grandson; Halstead treats a swimmer with a heart condition; Marcel considers using the OR 2.0 for surgery; Asher and Lieu search for a pregnant woman lost in the woods.

Marcel and Charles treat Lieu's gym buddy; Maggie and Halstead help a robbery-homicide suspect; Asher and Archer use Med's new opiate abuse AI program.

Goodwin, Maggie and Marcel help victims of a hit-and-run accident; Halstead struggles to diagnose a patient with seizures; Asher and Archer clash with Jack Dayton.

A brutal storm rocks Chicago; Halstead encourages Dr. Grace Song to go against her own findings for the benefit of their patient; Asher rushes to the hospital to help Archer's pregnant patient; Maggie's concern for Ben consumes her.