Season 5, Episode 24 Born to Kill
First Aired: May 14, 2007
Horatio hunts for a serial killer who brands his victims with a “Y” mark. When an arrest is made, the alleged culprit is found to possess a supposed “killer gene” due to an extra Y chromosome. But just as the CSIs believe they've closed the case, the killings begin again.
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- Premiered: September 23, 2002
- Rating: TV-14
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- Premise: A spin-off from 'CSI: Crime Scene Investigation' follows a South Florida forensics team headed by the brooding Horatio Caine. (more)