CSI goes after a serial killer whose signature is related his extra "Y" chromosome, once believed to be the "killer gene."
Episode rating
Cast of episode
68
14
10
6
1
- CSI Lieutenant Horatio 'H' Caine
- CSI Detective Calleigh Duquesne
- Ryan Wolfe
- CSI Detective Eric Delko
- Sergeant Frank Tripp
- Natalia Boa Vista
- Alexx Woods
- Detective Jake Berkeley
- Lucas Wade
- Lindsay Wade
- IAB Sergeant Rick Stetler
- Alexis Dawson
- Travis Peck
- Dan Cooper
- Rita Bolton
- Arthur Royce
- Mrs. Wade
- Shelly Seaver
- Holly Wade
- Jennifer Royce
- Emma Wade
- Young Lindsay Wade
- Young Lucas Wade
- Murder Victim #1
- Maxine Valera
- Police Officer
- Club Goer