CSI: Miami (2002)

S5E24 Born to Kill

A serial killer is terrorizing the city, leaving a chilling mark—a Y—on the chests of his victims. As the investigation intensifies, the CSI team finds themselves in a precarious situation, with one or more of their own in grave peril. This gripping season 5 finale escalates the stakes as the team races against time to catch the elusive murderer before it's too late.