thought some of the unsolved cases in town needed a new look and called upon the retired detective mike gandyd these two, who had been detectives up north before they, too, retired and moved to punta gorda, mike vogel and kurt mehl. >> i moved to florida and came down here to hunt and fish and play golf and go boating and go to the beach and just relax. and that lasted a couple months. i got very bored. >> reporter: and so three bored ex-detectives put on badges again to form the sheriff's very first official cold case unit and decided early on they'd work on tara's case. prosecutor feinberg was finally optimistic, sort of. >> i always felt that this was a case that could be solved. if it had a new set of eyes, it had somebody that could put the case together, connect all of the dots. >> reporter: what requests did you make of them? >> we wanted to know more about every piece of evidence, every -- we have to rule out every piece of dna in that house. so it was closing doors, it was excluding other people. >> reporter: so, that's what these three did, as a large photo of tara kept watch. but a