CSI: NY (2004)

S01E02 Creatures of the Night

Title: Shadows of the Night Plot: Jordy Thompkins, a drug addict, is found murdered in an alley, but curiously, the bullet that ended his life is nowhere to be found. Detectives Taylor and Hawkes suspect that a rat might have consumed the bullet, and tracking down the rodent leads them to a robbery that took place earlier that same day. Meanwhile, Robin Prescott is discovered in Central Park, brutally assaulted and left wearing only a peony leaf. Investigators Stella and Flack face the challenging task of identifying her attacker, but Prescott is unable to recall any details of the incident.