Det. Steven Stevenson "Steve" Crosetti is a fictional character on the television drama series Homicide: Life on the Street portrayed by actor Jon Polito for the show's first two seasons. He is believed to be based on Baltimore Police Department Det. Terry McLarney, who was in the BPD homicide unit in David Simon's book Homicide: A Year on the Killing Streets; the character's ancestry was changed from Irish to Italian because Polito got the role.