the calls were traced to the small town of bear, delaware to a young man named ricky spencer. rents. >> reporter: you're checking to see if he's got any offense reports, if there's a sheet on him? >> sure. >> reporter: he's coming up clean. >> yep. his dad has his own veterinary clinic. they're well to do. the mother and father are both extremely caring. he has siblings. >> reporter: it didn't make sense. why would a college kid from delaware have anything to do with an older ex-military man from michigan and virginia? in mid-june, eight weeks since venus went missing, michigan detective criger and his lieutenant, chuck christensen, decided to find out. they got in the car and headed east. destination: bear, delaware. would the man on all those phone logs hold the key to what happened to venus stewart? >> coming up -- >> we've got a guy who i believe is of interest. he's making a lot of calls to doug. he looks a lot like doug. he could pass for doug. we did not want him to know we were coming. >> police pay a surprise visit to this mystery caller. >> how do you know doug stewar