Chicago P.D.

A familiar face steps in when an intelligence detective is abducted by a heroin kingpin. In the season premiere, Intelligence is in pursuit of Derek Keyes (guest star Bokeem Woodbine), number one on Chicago's Most Wanted list and heroin kingpin. Meanwhile, Halstead (Jesse Lee Soffer) tries to get through to Lindsay (Sophia Bush) as her downward spiral continues after her three-week absence from the unit. At District, Olinsky (Elias Koteas) opens up to Platt (Amy Morton) about a secret from his past. Roman (Brian Geraghty) expresses his concerns to Burgess (Marina Squerciati) about what she's getting into by marrying Ruzek (Patrick John Flueger). Jason Beghe, Jon Seda and LaRoyce Hawkins also star. Yuri Sardarov, Markie Post, Nick Gehlfuss and Samuel Hunt guest star.

While pursuing a gangbanger, Burgess (Marina Squerciati) and Roman (Brian Geraghty) come across the body of an eight-year-old boy who was reported missing. Intelligence launches an investigation to find the killer and Antonio (Jon Seda) and Lindsay (Sophia Bush) question a prime suspect. Meanwhile, Burgess confides in Ruzek (Patrick John Flueger) about Roman's suspicious behavior and Bunny (guest star Markie Post) heads to the Ivory Tower with a statement that could be detrimental to Voight's (Jason Beghe) career.

While Platt (Amy Morton) tries to manage a chaotic desk area, a man struggling to get her attention takes a drastic action and demands that the unit find his missing daughter. At the same time, Commander Fischer (guest star Kevin J. O'Connor) informs Voight (Jason Beghe) that Bunny (guest star Markie Post) is bringing up new accusations on a case from his past. Lindsay (Sophia Bush) urges her mother to fix the situation. Meanwhile, Antonio (Jon Seda) is shocked to learn a secret Olinksy (Elias Koteas) has been keeping.

After surviving a hit against him, Voight (Jason Beghe) is convinced the culprit is a criminal he and Olinksy (Elias Koteas) once put away and is determined to catch him before he injures anyone else. At District, Atwater (LaRoyce Hawkins) accidentally spills information about Ruzek's (Patrick John Flueger) past which unsettles Burgess (Marina Squerciati) and Platt (Amy Morton) assigns Burgess and Roman (Brian Geraghty) a high society dognapping case.

After a botched undercover job, Ruzek (Patrick Flueger) is under scrutiny by the new Street Deputy Crowley (guest star Barbara Eve Harris) who will determine his future with the unit. A suspicious person call turns into a murder investigation when Burgess (Marina Squerciati) and her temporary partner Price (guest star Travis A. Knight) discover the body of a dead man in an SUV. After Mouse (guest star Samuel Hunt) identifies the victim as the owner of a security company, the unit soon realizes there might be more to his story. Halstead (Jesse Lee Soffer) and Lindsay (Sophia Bush) take a step forward in their relationship. Part 1 of 2.

After a botched undercover job, Ruzek (Patrick Flueger) is under scrutiny by the new Street Deputy Crowley (guest star Barbara Eve Harris) who will determine his future with the unit. A suspicious person call turns into a murder investigation when Burgess (Marina Squerciati) and her temporary partner Price (guest star Travis A. Knight) discover the body of a dead man in an SUV. After Mouse (guest star Samuel Hunt) identifies the victim as the owner of a security company, the unit soon realizes there might be more to his story. Halstead (Jesse Lee Soffer) and Lindsay (Sophia Bush) take a step forward in their relationship. Part 2 of 2.

Intelligence sets out to find a missing teenaged boy who they believe poses a serious threat to the students at his wealthy school after finding disturbing drawings in his notebook. Meanwhile, Atwater (LaRoyce Hawkins) is eager to make a good impression on a prominent African American police Captain (guest star Eamonn Walker) and Olinsky (Elias Koteas) and Michelle (guest star Madison McLaughlin) find themselves in a difficult situation and turn to Ruzek (Patrick Flueger) and Burgess (Marina Squerciati) for help. Jason Beghe, Jon Seda, Jesse Lee Soffer, Sophia Bush, Brian Geraghty and Amy Morton also star. Guest starring Samuel Hunt, Yaya DeCosta, David Eigenberg, Brian White and Barbara Eve Harris.

When Intelligence follows up on a tip Antonio (Jon Seda) and Halstead (Jesse Lee Soffer) received from a reliable informant about an upcoming drug trade, the team is shocked to discover the mutilated body of a man. Upon further investigation, the body is identified as a government official and when Olinksy (Elias Koteas), Ruzek (Patrick Flueger), Lindsay (Sophia Bush) and Halstead question the man's acquaintances they discover he had access to very important devices. Meanwhile, Burgess (Marina Squerciati) helps plan a surprise for Platt (Amy Morton).

When the decapitated body of a woman found in Lake Michigan is connected to Voight's (Jason Beghe) social circle, Lindsay (Sophia Bush) fears his relationship with the group may hinder his ability to approach the case objectively. Roman (Brian Geraghty) is having a hard time coping with recent events and an error in judgment causes him to make a grave mistake. Meanwhile, Olinsky (Elias Koteas) becomes upset when Antonio (Jon Seda) doesn't consultant him before making a decision that could affect Michelle's (guest star Madison McLaughlin) future.

An investigation becomes personal for Voight when an acquaintance from his past is caught putting others lives in danger. A doctor with personal connections to Voight (Jason Beghe) is under investigation when four of his patients are committed to Chicago Med after an overdose of chemo. The doctor denies Lindsey (Sophia Bush) and Halstead (Jesse Lee Sofer) access to his files, but after obtaining a warrant the team is able to track down his patients and discover all of them have been poisoned with unnecessary chemo. Meanwhile, Burgess (Marina Squerciati) and Platt (Amy Morton) work together to clear Roman's (Brian Geraghty) name.

After a luxury condo is robbed, the team is shocked to learn that not only was the family fast asleep when the crime occurred, but their teenaged daughter was violated during the invasion as well. Voight (Jason Beghe) consults Jimmy (guest star Steven R. McQueen) from Firehouse 51 to confirm his suspicion that the family was knocked out by a powerful gas, and Lindsay (Sophia Bush), Halstead (Jesse Lee Soffer), Atwater (LaRoyce Hawkins) and Ruzek (Patrick Flueger) go undercover to seek out the perpetrators. Meanwhile, Voight tries to help a former acquaintance get back on his feet, and Platt (Amy Morton) and Mouch (guest star Christian Stolte) receive disappointing news regarding their upcoming wedding.

Voight (Jason Beghe) convinces Deputy Crowley (guest star Barbara Eve Harris) to bring in his former cellmate, Eddie Little (guest star Clancy Brown), as a CI for the unit in order to help bring down a big-time cocaine supplier and his local dealers. Antonio (Jon Seda) is skeptical of this decision but Voight puts him at ease when he opens up about his time in prison with Little. Meanwhile, Burgess (Marina Squerciati) makes a difficult decision regarding her relationship with Ruzek (Patrick Flueger), and Roman (Brian Geraghty) devises a plan to help fund Platt (Amy Morton) and Mouch's (guest star Christian Stolte) wedding with the help of Firehouse 51.

Lindsay (Sophia Bush) goes undercover in an effort to track down a rogue police officer targeting women leaving a local casino. When Detective Martin Watts (guest star Erik Jensen), who oversees all cases out of the casino, gets word of the investigation he becomes involved much to Voight's (Jason Beghe) dismay. After recent events, Burgess (Marina Squerciati) sets plans in motion to transfer Districts pending Platt's (Amy Morton) approval, and Mouse (guest star Samuel Hunt) attempts to lift Ruzek's (Patrick Flueger) spirits by offering to set him up with a friend. Meanwhile, Antonio (Jon Seda) volunteers to take Roman's (Brian Geraghty) place in the upcoming boxing match against Jimmy (guest star Steven R. McQueen) from Firehouse 51.

After infamous criminal Gregory Yates (guest star Dallas Roberts) escapes from a New York prison, Lindsay (Sophia Bush) and the team learn that he intends to flee New York and is headed for Chicago. The SVU team informs Intelligence that Yates has been gathering information on Lindsay and after Platt (Amy Morton) calls in a triple homicide likely at the hand of Yates, Benson (guest star Mariska Hargitay) and Fin (guest star Ice-T) catch the next plane to Chicago. Upon investigation of the crime scene, the team learns that another tenant in the building is missing and they work to find a connection between Yates and the woman.

While working at a sobriety checkpoint, Burgess (Marina Squerciati) finds a duffel bag full of heroin in the truck of a respected college professor who claims to know nothing about how the drugs ended up there. Voight (Jason Beghe) decides to hold off on charging the unlikely suspect and Olinksy (Elias Koteas) and Antonio (Jon Seda) follow up on a lead to see who is behind the drug smuggling. At District, Roman (Brian Geraghty) expresses his desires to become a Field Training Office to Platt (Amy Morton), and Mouse (guest star Samuel Hunt) sets Halstead (Jesse Lee Soffer) up with an off-duty security job working for the attractive owner of a medical marijuana clinic.

When a young boy is executed, Intelligence turn to the boy's parents for information and upon further investigation, discover the father has a criminal background and was a part of a local gang. After another shooting in gang territory, this time nonfatal, Lindsay (Sophia Bush) and Halstead (Jesse Lee Soffer) speak to the victim's mother to see if the two crimes are related and Mouse (guest star Samuel Hunt) works to find a connection. To honor the deceased young victim, Antonio (Jon Seda), Platt (Amy Morton), Roman (Brian Geraghty), Burguess (Marina Squerciati), Mouse and a number of other CPD officers and members of the community come together for a candlelight vigil.

While out on a bank run for his off duty security job at the dispensary, Halstead (Jesse Lee Soffer) and his co workers find themselves under attack by a violent robbery crew which quickly becomes a full scale shootout. Voight (Jason Beghe) and Lindsay (Sophia Bush) question the owner of the dispensary who mentions her business has received threats from local gangs upset she's cutting into their revenue. Meanwhile Roman (Brian Geraghty), Burgess (Marina Squerciati), Antonio (Jon Seda), Halstead, Ruzek (Patrick Flueger) and Atwater (LaRoyce Hawkins) follow up on a lead and track down a potential suspect.

While responding to a call of shots fired, Voight (Jason Beghe), Antonio (Jon Seda), Halstead (Jesse Lee Soffer) and the team come across a secret battered woman's shelter and discover the owner has been wounded and a resident of the shelter has been kidnapped. The team faces a challenge as the gunman is still at large and the identities of the women are kept confidential. Meanwhile, Burgess (Marina Squerciati) and Roman (Brian Geraghty) go undercover to track down a man robbing people by catfishing them on a dating app, and Lindsay (Sophia Bush) opens up to Halstead about her past.

When a call comes in about a woman stabbing a man then fleeing the scene, Burgess (Marina Squerciati) and Lindsay (Sophia Bush) go investigate and find a young woman with the weapon in her hand. The suspect turns out to be a victim and she tells Olinsky (Elias Koteas) that she was held hostage for months and her kidnapper attempted to psychologically manipulate her into forgetting her identity while he physically abused her. The team sets out to find the woman's abductor before he can harm anyone else. Meanwhile, tensions are high at the station when Ruzek (Patrick John Flueger) accuses Roman (Brian Geraghty) of having feelings for Burgess.

Responding to a call about a suspicious duffle bag at the Chicago Lakefront, Voight (Jason Beghe) is horrified to discover that the bag contains the frigid and unmoving body of a newborn baby. Determined to find the culprit who abandoned the infant, Intelligence receives a promising lead based on information provided by Chicago Med and Ruzek (Patrick Flueger) helps zero in on a potential suspect. Meanwhile, Voight is surprised to hear that his son is in town and Burgess (Marina Squerciati) and Roman (Brian Geraghty) grow closer.

After a hooded man open fires on their patrol car, Roman (Brian Geraghty) is left wounded and Burgess (Marina Squerciati) takes off after the shooter, briefly losing sight of him, and shoots when she relocates him turning in her direction with a glimmer of silver in his hand. No gun has been found at the crime scene and the shooter is identified as a 17-year-old honor student who will likely never walk again due to his injuries. Protests begin as the public views the case as another incidence of a police officer shooting an unarmed African American teenager. Assistant State Attorney Peter Stone (guest star Philip Winchester), the same man who sent Voight (Jason Beghe) to prison, has been assigned to help defend Burgess and conduct his own investigation under the supervision of State Attorney Mark Jefferies (guest star Carl Weathers). Stone and his team need to collect enough evidence to indict the teen and clear Burgess, but must tread with caution on this high profile case as tensions run high.

While responding to a call of shots fired at a family residence, Lindsay (Sophia Bush) and Halstead (Jesse Lee Soffer) discover the only survivor is the youngest daughter who is traumatized. While Lindsay and Dr. Charles (guest star Oliver Platt) evaluate the girl and see if she can help identify the killer, Antonio (Jon Seda) and Olinsky (Elias Koteas) look into a pyramid scheme "selfhelp" group for potential suspects. Meanwhile, Platt (Amy Morton) tries to make the case to Commander Crowley (guest star Barbara Eve Harris) for Burgess (Marina Squerciati) and Roman (Brian Geraghty) to remain partners.

When the team finds the body of a widowed, single mother in the trunk of her car, they are shocked to discover that the victim was in constant contact with Voight's (Jason Beghe) now reformed son, Justin (guest star Josh Segarra). After Lindsay (Sophia Bush) and Voight find Justin has been attacked in the same manor and is critically injured, Antonio (Jon Seda) and the team know that Voight will be out for revenge. Meanwhile, Roman (Brian Geraghty) makes a difficult decision and Commander Crowley (guest star Barbara Eve Harris) has plans to make changes within the unit.

Before diving into Season 3, relive this Season 2 shocker - as Lindsay responds to Voight's supportive move.