The Creepiest Crime Scene From CSI Season 3

In Season 3, Episode 14, titled "One Hit Wonder," the team deals with a peeping tom who has started assaulting his victims. The episode starts with a haunting scene where a woman wakes up to find that one of her windows has been opened and someone has left a glass of water on the table. However, a woman's screams can be heard through the wall — as it turns out that the perpetrator is in the next apartment. 

While Catherine Willows (Marg Helgenberger) helps the victim, Joanne Crooks (Chad Morgan) Grissom and Nick Stokes (George Eads) investigate the crime scene itself — which is where they make a horrifying discovery.

The investigators find a patch of crusted semen underneath the windowsill of Joanne's apartment. Meanwhile there are also face prints on the sliding glass doors of her neighbor's home — suggesting that the culprit has been watching the two women for quite some time. This is incredibly disturbing, just in itself, but the idea that someone could be watching a victim at any time, for their own sexual gratification, is truly a haunting thought. And "One Hit Wonder," while not as grisly as some of the deaths in "CSI" Season 3 or the rest of the series, makes for one of the show's creepiest — and most underrated — episodes.