As the Sheldon Jin murder investigation moves forward, Voight is under close watch by Internal Affairs but he’s still in complete command of the intelligence unit. A routine undercover job becomes anything but when Voight’s SUV is T-boned while trailing an armored car carrying Ruzek. Burgess meets her new partner, Sean Roman and tension is high from the start, and she soon realizes there’s more to his story. After a long day, Lindsay pays a visit to someone she hasn’t seen in a very long time.

Atwater is settling into his new gig on intelligence as Antonio is relegated to desk duty while recovering. Lindsay finally realizes she has no way out and confides in Voight for help. Meanwhile Jin is confronted about his secret meetings with Stillwell.

As Antonio’s life is now in question, Voight and Platt open up about their pasts. Jin is caught while tinkering with Voight’s computer and uses the only scapegoat possible to keep him in the clear. At the same time with Charlie back in town Lindsay realizes she’s going to have to come clean about a few things. Halstead finally gets answers he’s been wanting about Voight’s and Olinsky’s past.

Commander Perry notifies the Intelligence unit that Pulpo has been released to help track down a dangerous cartel leader. This doesn’t sit well with our team as he kidnapped one of their own and no love is lost between sides. Meanwhile, Ruzek gets some difficult news as a blast from Lindsay’s past comes back, giving us a glimpse at where she came from. Voight reminds her that she’s come too far to screw it up. At the same time we learn something about Jin that is bound to be a problem.

The Intelligence Unit works to find the bombers. Even with government agencies in the mix, Voight and his team work the case from their own angles and connections. Lindsay and Antonio question doctors who handled the transplant surgery for an Ambassador from Syria, but no clues emerge. Olinsky gets some solid intel and the team work from there. It’s a race against time as they realize there may be additional bombs targeted to detonate. Meanwhile Burgess sits vigil for her niece whose life hangs in the balance.

(A Dark Day (1) aired on Chicago Fire, S2E20.)

Voight and the team discover a massacre, eight million in cash stolen and two wounded men in a clearing house. During questioning, one guy, Perko, provides some intel that is key to the case and leads Antonio to realize that two gangs were involved. Burgess steps up to help the unit and prove herself to Voight. Meanwhile, a softer light is cast on Platt when she enlists the help of Ruzek.

Halstead’s badge is revoked when Lonnie Rodiger is found dead; Severide and Clarke find Dr. Elliot’s torso; Sumner tries to prove herself; Lindsay shares a moment with Severide.

In responding to a call Atwater and Burgess discover a gunshot victim and the only witness is Lexi Olinsky. The shooting is tied to a Latin gang. To protect Olinsky’s daughter, Voight takes the case from the Gang Unit. Ruzek pulls up Burgess to help with an undercover mission that he hopes will help solve the case. Jon Seda, Sophia Bush, Jesse Lee Soffer, and Archie Kao also star.

Voight is assigned a new Internal Affairs handler, Stillwell who proves to be suspicious of Voight’s actions. During an investigation involving a gambling ring Voight is forced to work with his former partner from the Gang Unit, Shi. At the same time Halsted remains fixated on Lonnie Rodiger and enlists Jin’s help to gather more information. Meanwhile, Ruzek’s inflated ego leads Olinsky to take him down a peg and offer a great opportunity to Atwater.

Voight’s son may be involved with the Fitori murder case, intensifying tension between Antonio and Voight; Ruzek helps Burgess get retribution.

Voight and Antonio enlist the help of agents at the Special Victims Unit in New York, Fin and Rollins, to help track down the culprit of a series of rape/murders. Burgess has an opportunity to prove herself to Intelligence. Elsewhere Lindsay enlists the help of Halstead to act as her date for her high school reunion to get back at an old rival.

(Comic Perversion (1) aired on Law & Order: Special Victims Unit, S15E15.)

Atwater and Burgess are given a new patrol car, but are challenged with keeping it brand new. A run in with a psychotic woman leads the Intelligence Unit to discover a drug smuggling operation which has put several girl’s lives in peril. Voight’s overprotective act with Lindsay leads her right where he doesn’t want as she also helps to keep Justin out of trouble. Meanwhile on stakeout, things get tense between Olinsky and Ruzek as Olinski tries to teach him the finer points of surveillance.

More is learned about Halstead’s dislike of the Rodiger family and it’s family relationships all around as Olinsky shows a paternal side with his daughter Lexi in an attempt to protect her and as Voight’s trying to help his son who has recently been released from jail. Meanwhile the Intelligence Unit investigates a counterfeiting operation after discovering some high end cloth-like paper. Sergeant Platt sends Atwater and Burgess to arrest a hoarder where they discover more than just clutter.

Voight and team head to a house that’s been associated with a number of top gangs. Events at the search result in Ruzek, being encouraged to seek some counseling which may have lasting repercussions professionally and personally. Meanwhile Halstead’s temper rises when he comes in contact with some unwelcomed people from his past.

Antonio’s son was kidnapped and he has a feeling the Columbian drug gang is to blame. Pulpo, the Columbian gang leader, is being held in jail and suggests his release may trigger the release of Diego. During the investigation, Halstead learns some new information about Lindsay. Voight offers Antonio a new approach to get information on Diego’s whereabouts.

After a slew of brutal slayings, District 21, led by Sergeant Hank Voight go after a Columbian drug cartel cleaning house in Chicago. They discover D’Anthony who proves to be an asset in the investigation. At District, complicated histories and unit rivalries surface which could end up costing them one of their own. Meanwhile, Rookie Kyle Ruzek is pulled from the police academy by Olinski to join the team.

Piper gets surprising news and a boost from her friends. The jury returns with a verdict, and the big kickball game is on.

Carol and Barb prepare for war. Linda auditions inmates for a prison PR video. Alex makes a deal with Badison to keep Piper out of trouble.

While Red and Carol scheme against Frieda, Suzanne watches Frieda’s back. Lorna swears her allegiance to Barb as Nicky works to thwart another plot.

Aleida seizes a business opportunity. An anonymous tip sends Caputo on a stakeout. Luschek tries to help Gloria, who worries she’s in danger.

While Daddy buys time with Barb, Daya looks for new ways to bring in oxy. Black Cindy’s guilt takes a toll on her body. Red acquires a powerful ally.

Taystee gets fan mail — and an assist from an old friend. Piper lobbies Luschek to bring back kickball. Aleida tries out a new sales tactic.

Badison hustles to get back in Carol’s good graces. Blanca longs to get pregnant — and Nicky has a plan. Caputo and Figueroa’s relationship evolves.

While Daddy deals with backlash, Badison plots revenge. Flaca finds a co-host for her radio show. Lorna discovers that pregnancy has its perks.

Pranksters wreak havoc on Halloween. Luschek earns points with the other guards. As Linda faces a crisis, Donuts and Pennsatucky have a change of plans.

Aleida struggles to find work on the outside. Backed into a corner, Nicky pleads her case to Red. Taystee reaches out to Caputo for help.

Linda makes a power play, Piper digs for information about Alex, and the women get their first taste of a decades-old feud between cellblocks.

Ordered to hand out harsh sentences, the feds search for scapegoats. Languishing on paid suspension, Caputo tries to break out of a rut.

The COs at Litchfield’s maximum security unit size up the new arrivals. Off her medication, Suzanne hallucinates.

As chaos descends on Litchfield three days into the riot, the inmates wonder what the future holds and seek solace in loved ones.

Boo dabbles in blackmail, Nicky promises to help Lorna, Doggett makes a discovery, and Piper comes to a realization about Alex.

Red and the others weigh their options. Gloria wrestles with her conscience as she moves forward with a plan. Lorna takes over the pharmacy.

Taystee tries to keep the negotiations on track. Angie comes up with an idea for fixing Leanne’s finger. Piscatella’s past is revealed.

Red senses trouble, but the others are convinced she’s just paranoid. Taystee and Black Cindy enlist an unlikely ally, and two old friends clash.

While Taystee sits down with a negotiator, Red and Blanca put their own plan into action. Gloria counsels Daya and asks Caputo for a favor.

Black Cindy concocts a scheme to distract Suzanne when she spirals out of control. Taystee and Piper search for ways to honor Poussey’s memory.

Boo defends Doggett, Janae consoles Soso, and Lorna comes on to Nicky. While Alex lays low in the yard, Piper decides to take a stand.

When the inmates’ antics make the morning news, Flaca and Maritza soak up the spotlight. Brandy and her crew auction off Judy to the highest bidder.

Red and Blanca dig for dirt on Piscatella. Suzanne conducts a séance. The guards show off their talents for “Litchfield Idol” judges Leanne and Angie.

Linda begins to see the prison in a new light, while Judy grows desperate to escape. With darkness falling, the inmates compile a list of demands.