The MPU searches for a college student after she goes missing during a house party. Sidney and Keith try to adjust to normal life again. (R)

Firehouse 51 welcomes back some familiar faces and says goodbye to Brett. Violet scrambles to decorate Brett's wedding venue. A call at the expo center takes a shocking turn. (R)

Violet clashes with her new partner; Severide discovers a hidden stash of money on a call and squares off against the cops; Mouch gets a parking ticket. (R)

A hazmat call at a dialysis center leads to a shocking discovery; Boden clashes with Paramedic Chief Robinson; Carver notices a concerning change in Gibson's behavior. (R)

The team is called in to find a connection between a series of random poisoning cases before more people die. (R)

The team investigates the murder of a professional informant after he's found dead outside an abandoned factory. (R)

The MPU searches for a college student after she goes missing during a house party. Sidney and Keith try to adjust to normal life again. (R)

Stabler goes undercover as a big rig driver to expose an international smuggling ring. As he settles into his new identity, he gets to know the ''working girls'' and a pattern of disappearances emerges. (R)

Halstead's past resurfaces when a former Army colleague is implicated in a deadly blast. (R)

Cruz feels the burden of his increased responsibilities. Kidd, Gallo and Carver get caught in the middle of a gang war on a call. Herrmann wrangles Trudy for help lifting Cindy's mood. (R)

The team is called in to find a connection between a series of random poisoning cases before more people die. (R)

Goodwin recruits Charles to evaluate her ex-husband's memory. Archer treats one of Sean's peers from the rehab center. Asher treats a woman from a rural clinic whose miscarriage was improperly treated (R)

Tan is left reeling when his girlfriend is kidnapped, and 20-Squad must race to track down a violent cartel leader who may be behind the abduction. (R)

Stabler goes undercover as a big rig driver to expose an international smuggling ring. As he settles into his new identity, he gets to know the ''working girls'' and a pattern of disappearances emerges. (R)

Halstead's past resurfaces when a former Army colleague is implicated in a deadly blast. (R)

The team is called in to find a connection between a series of random poisoning cases before more people die. (R)

Cruz feels the burden of his increased responsibilities. Kidd, Gallo and Carver get caught in the middle of a gang war on a call. Herrmann wrangles Trudy for help lifting Cindy's mood. (R)

Goodwin recruits Charles to evaluate her ex-husband's memory. Archer treats one of Sean's peers from the rehab center. Asher treats a woman from a rural clinic whose miscarriage was improperly treated (R)

Tan is left reeling when his girlfriend is kidnapped, and 20-Squad must race to track down a violent cartel leader who may be behind the abduction. (R)

The team investigates the murder of a professional informant after he's found dead outside an abandoned factory. (R)

The MPU searches for a college student after she goes missing during a house party. Sidney and Keith try to adjust to normal life again. (R)

A bulldog investment fund manager is murdered in the midst of a client's big takeover. Price goes to desperate lengths to prove the suspect's motive.

Detective. 3. A Vicious Circle. SubHe.

The team is called in to find a connection between a series of random poisoning cases before more people die. (R)