First Aired: Oct. 14, 2010 on CBS
Summary: The CSI team investigates a mad slasher who strikes without leaving a trace -- because he wears a form-fitting black latex suit that leaves not a molecule of evidence behind
Main Characters in this Episode
- Goof (continuity error): When "Ian Moone" descends from the attic towards the end of the episode, he is holding some of Margot's letters. When he moves through the house, spider-like, he doesn't have the letters. Soon after, he has them again, as he throws them into the air.
- Sqweegel originated in the novel Level 26: Dark Origins (2009) by Anthony E. Zuiker with Duane Swierczynski, and had been played by Daniel Browning Smith in its "cyberbridge" companion videos. The car wash sequence (from where Sqweegel gets his name) is also from the book. The episode's broadcast date coincides with the release date of its sequel Level 26: Dark Prophecy (2010).