Did Upton's old undercover identity cause a world of trouble for the team?
That was revealed on Chicago PD Season 5 Episode 18 when Upton thought the old persona would be integral to taking down a meth ring.
Meanwhile, Woods continued to pursue some results in his plan to take over everything.
This sent Voight on a mission to get some help for Olinsky.
Was it too late to save either of them?
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Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.