CSI: NY (2004)

S03E17 The Ride-In

Title: The Ride-In Plot: Danny and Mac head to Noah's Ark to uncover whether a shattered promise is connected to a murder. Meanwhile, Stella and Sheldon probe into the suspicious death of a man in a cigarette costume. As they work the case, Stella is anxious about retaining her job after delaying the news to Mac regarding her potential HIV status.