but lynn's fiance, ed o'dell, stepped in. >> and ed o'dell wrote a check to the navy for another $13,000 to extend the search one more day. >> reporter: the extra day bought one promising sighting. >> we saw what we thought was a black bag on the ocean floor. >> reporter: grappling hooks were sent down. searchers on deck held their breath, but it wasn't what they were looking for. >> a plastic garbage bag. >> reporter: what was in the garbage bag? >> it turned out to be beer cans. garbage. >> reporter: the navy search had fizzled out. detectives were back at square one, and they would already ruled out one of the people closest to lynn. what about ed o'dell? do you have to suspect the fiance? >> not at all. he was in tennessee at the time all of this occurred. we have the phone records. >> reporter: so after months, detectives were no closer to solving the case. they had no dna, no forensics, no blood spatter, nothing to help them. and despite their suspicions about clifford friend, law enforcement couldn't say definitively what happened to his ex-wife, lynne. >> we didn't have the body,