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When a gang from El Salvador infiltrates Chicago, intelligence works with a visiting detective to put an end to the crew's brutal tactics. And Antonio finds himself getting close to the Salvadoran Detective, Marcella Gomez, only to learn she has a hidden motive for being in Chicago. Meanwhile, Voight learns that the body of his son's killer has been found. Written by NBC
All Episodes - S05
EPS16
Intelligence enlists Firehouse 51 to help prevent the latest in a series of bombings targeting the media. ...
EPS17
A prominent Alderman known for his urban revitalization efforts is murdered; Olinsky receives an ultimatum from Woods. ...
EPS18
Upton resumes an undercover identity to take down a meth ring run by a former criminal contact; Voight calls in a favor for Olinsky when pressure from Woods mounts. ...
EPS19
A string of stash house robberies lead back to an unlikely individual; Voight confronts a key witness in the Bingham investigation. ...
EPS20
When Voight witnesses the kidnapping of a woman who's somehow connected to his past, Intelligence searches for a connection between the kidnapping and bank robberies. ...
EPS21
Halstead and Atwater go undercover to prevent military-grade weapons from hitting the street. Meanwhile, Voight calls in a favor as a last-ditch effort to clear Olinsky's ...
EPS22
Intelligence seeks justice for Olinsky when he's stabbed in prison; Antonio's loyalty is tested; Woods looks to take down Voight once and for all. ...