you executed a search warrant on terry britt's house, and that involved bringing in cadaver dogs. find anything? >> the cadaver dogs alerted to two of britt's vehicles and several tools around his house. somebody has been decomposing in or around these vehicles, in or around these tools. >> reporter: so you seized the vehicles and the tools and tested them for any dna? >> correct. >> reporter: no dna. >> correct. >> reporter: undeterred, police wiretap britt's phone and put a bug in his house and listen to his conversations. >> the wiretap did not result in anything. we didn't have any type of admission on that. and i think a lot of people looked at that as exoneration. >> reporter: but not dicus. and he says largely because of this -- a recording of a chilling conversation he had with britt. britt seems to actually fantasize about what holly's kidnapper might have been thinking. >> she's young, pretty, perfect, somewhat, body. okay, like a toy. he can't wait to get her to where he's going to take her to, because he's wanting that body. but here comes reality, now i've got a body,