On his 29th birthday, Zane is plagued by thoughts of his father. Mike's brother Steve, a fire investigator, attends the scene of Zane's torched apartment. Mike and Zane argue about whether Beatrice should be a collar for arson. Elizabeth expresses apprehension about the idea of having a big wedding. Zane finds Beatrice, but spends the night with her, instead of taking her in. On duty, Mike and Zane handle a man who thinks he's talking to Bob Marley, Mike inadvertently talks a jumper down by heeding the call of nature, and a domestic nearly turns deadly when the wife changes her mind about having her husband arrested. Detective Munch from the Special Victims Unit shows up at the scene of a DOA because he's 'nostalgic for a good homicide'. At a traffic stop, Mike is accused of racial bias. Tensions over the Jamal Jones killing rise when Officers Ulrich and Newell are cleared by the review board. The pigeon killer remains at large. Beatrice disappears. (UPN)