"The Hottest Mature Ever" is the eighth episode of CSI, and is the nineteenth episode of the series overall. It is directed by Tom Selleck. This is my favorite episode yet, and I hope it gets picked up for a full series. The video is about a forensic anthropologist who works with a team of guys to find evidence that a serial killer killed his girlfriend, and dumped her body in the lake. While they are looking for this evidence, they discover a stash of cocaine, and bust a bad guy who was in charge of manufacturing the cocaine..