Meet Morgan. At first glance, she's just your average cleaning lady. She has no problem getting her hands dirty, which is a good thing considering it's not fancy houses she cleans for a living - it's gruesome crime scenes. It's at one of these scenes that Morgan discovers a key piece of evidence overlooked by the forensics team. This, and her knack for reading blood splatter, catch Nick's attention, a newbie detective working the case. The pair soon become unofficial
