You Wish

S4 E1101/11/17
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After a sex offender is found dead and mutilated, the Intelligence Unit realizes his injuries don't align with his cause of death, leading the team on an unexpected pursuit; Halstead forces Lindsay to confront the truth about her biological father.

Don't Read the News

S4 E1001/04/17
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A young woman's murder shows apparent links to a series of unsolved killings, but it may be more complicated than it appears; Lindsay agrees to meet her biological father, while Halstead insists on investigating his background.

Don't Bury this Case

S4 E901/03/17
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After Severide is implicated in a hit-and-run and cannot recall the events of the night, Voight and the Intelligence Unit work around the clock to uncover the truth. Meanwhile, Lindsay considers the idea of meeting her father.

A Shot Heard Round the World

S4 E811/16/16
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The police force is shaken after one of its own is targeted by a cop killer; Voight and team put everything on hold to identify the perpetrator from a long list of suspects and stop his violent rampage.

300,000 Likes

S4 E711/16/16
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The State Attorney's office calls upon the Intelligence Unit after the only witness in a serial rape case is murdered; Peter Stone offers Antonio a surprising - and tempting - opportunity.

Some Friend

S4 E611/09/16
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When a baseball player is the main suspect in a young girl's murder, Voight and team dig for the truth - and Olinsky, who has a history with the athlete, may be their secret weapon. Meanwhile, Lindsay receives flowers from an unknown party.
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