Plot hole: Voight and Trudy are sitting in Voight's patrol vehicle discussing Roy Walton and Mark Irwin. They state that Intelligence killed Mark Irwin. After, Voight is shown checking his vehicle for a tracker and bug, which he finds on and in the vehicle. Based on Voight's experience, he should have checked the vehicle first. Also, the case should be done, as the FBI would have heard their conversation. (00:31:03 - 00:32:05)
Chicago P.D. (2014)
1 mistake in Fractures
Starring: Sophia Bush, Jason Beghe, Patrick John Flueger, Jesse Lee Soffer
Question: If Voight's a dirty cop and everyone knows it why tolerate it? Why not set up a sting and take him down?
Answer: Also, if you watch Season 1 of Chicago Fire it gives a little history of Voight before he goes to jail when he was actually a "dirty cop" and Antonio Dawson is actually the one who takes him down. I found it interesting and was surprised by his character back then.
Answer: And cuz he's only dirty to the bad guys. He takes care of the victims.
Answer: Because he is a great cop and gets the job done better than anyone.