CSI: NY (2004)

S4E5 Down The Rabbit Hole

Title: Into the Abyss Plot: Detective Taylor finds himself immersed in an unexpected realm while investigating a recent murder. As he delves deeper, he becomes intrigued by the striking resemblance of Cheryl Duncan to someone he knows. Along the way, he uncovers a startling revelation about the killer through their online activities, leading him to a web of secrets that could change everything.