Who was the unlikely ally?
On Chicago PD Season 8 Episode 6, things took a deadly turn when Voight recruited an old face to help with a murder investigation.
Meanwhile, Halstead and Ruzek tried to infiltrate a crime ring and encountered a complicated situation.
Elsewhere, Burgess had a tense conversation with someone she felt was causing problems in the office.
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Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.