Category 5 Chicago Fire : Season 3 Episode 22

TV-14 NBC 43m int(0)

Aired: May 5th, 2015 @ 9:00 PM EST on NBC

At Sgt. Voight's urging, a determined Lt. Casey agrees to go undercover in an effort to provide proof of Jack Nesbitt's shady dealings. Meanwhile, Otis and Severide continue to disagree about the integrity of Scott Rice, causing tensions to flare between members of truck and squad. Meanwhile, Herrmann helps out a fellow member of the firehouse.