Best stain detectors: Roseville CSI

Call it the CSI effect. But whenever people find out what Scott Koll does for a living, the expectations get a little ridiculous. It's true, the Roseville Police Department property-and-evidence supervisor oversees one of the most advanced forensics labs in the region, second only to the U.S. Department of Justice. But because of the booming interest in crime-scene investigation, thanks to CBS' long-in-the-tooth franchise and other programs like Showtime's Dexter, Koll has to sometimes explain that he can’t build suspect profiles using just an eyelash and wad of spit. In fact, the Roseville unit’s claim to prominence is a piece of equipment that differentiates whether an evidence sample is blood or seminal fluid. Yes, that’s it. And no, it’s not as easy as you think. “That is a mark of distinction for our region,” Koll says. Bad guys, beware. Roseville Police Department, 1051 Junction Boulevard in Roseville; (916) 774-5000; www.roseville.ca.us/police.