Quirky northern California couple Joe and Tanja Shepherd have given up their law enforcement careers to become private investigators. Unfortunately for the down on their luck couple, business is slow, and if they don't come up with some money soon, they're going to lose their home to foreclosure. To make matters worse, Tanja is pregnant and expecting any day.Then Joe's family friend Sheriff Diekmann approaches the couple with an offer. He will pay the detectives as consultants to investigate a cold case that he wants solved. It won't be easy - the victim has been dead for five years, the trail has gone cold, and the case was bungled by the original investigators- but the Shepherds are willing to do whatever it takes to save their family's home... Even if it means risking their lives to bring the cold-blooded killer to justice.