In the Season 2 finale, Commander Perry asks Voight and the team to rescue his cop-nephew from a corrupt squad of officers that robs drug dealers. In other events, Lindsay struggles to maintain her sobriety; and a woman from Olinsky's past contacts him.moreless
Severide's old friend arrives, hoping for a second chance with the Chicago Fire Department. Meanwhile, Mills tries to regain his active squad status, Mouch confronts his fear about meeting his child, and Brett and Dawson set out to have a big night out.moreless
Mouch learns he may be a father. Dawson and Casey agree to take a break. The new Chief makes a tactical error and tries to put the blame on Casey. But Casey finds and unlikely ally in the case against him.moreless
Sean and Kim get themselves into trouble on patrol, with no back up and things looking bleak will anyone notice they are missing in time to save them? Meanwhile the members of intelligence undergo some unwanted training.moreless
There's a new chief at 51 while Chief Boden takes leave, and he brings with him a relieving firefighter who none expects they would every work with. The new chief's methods of leadership are quite different than the crews at 51 are used to ...moreless
The race is on to catch one of Chicago's most deadly arsonist's before he gets to one of them...
Leslie Shay's sister visits to get some closure on her Shay's death and the investigation into her arson continues
Severide and Dawson conduct their own investigation into the fire that killed Shay. Casey and crew come to the rescue of one of their own. Mills takes a personal interest in a victim of domestic violence. Bowden grows closer to his father.moreless