This is one of the creepiest characters and episodes from CSI. I was so frightened watching this episode a couple years ago I had to turn all the lights on. And then phoned my daughter who was also watching it. Ann Margeret was also in this episode.The serial killer wore total pvc suit and was "unforensic" ot able to find any evidence of who he was except for the nicknames "Sqweegel" and "Ian Moore" (I am no one). This episode was so popular and so good that fans are hoping the writers will create more episodes of "Sqweegel". Here is a behind-the-scenes video.