Chicago Fire (2012)

S7E15 What I Saw (I)

Title: What I Witnessed (I) Plot: Following the disappearance of a key to the firehouse lockbox, a series of thefts emerge, prompting Sergeant Hank Voight to suspect a firefighter might be implicated. With the backing of Chief Boden, Voight enlists Cruz to go undercover and investigate any potentially dubious behavior among the crew. This storyline continues in Chicago P.D. S06E15 Good Men (II).