and that made investigators take another look at eric stellmacher, who was asked to come down to hiss not going to be a friendly chat with his old work buddies. >> when they asked me if i'd be willing to take a polygraph. i was like, wait a minute. you guys know me, you should know better than that. and i realized the best way to make sure that i'm clear in their eyes is to take a polygraph. right after it was finished, they said, well, you passed. >> stellmacher was nothing more than the right guy in the wrong place. >> everything came up clean. he was just coincidence. >> luke and beals were now convinced larry was the bomber and that he was in it alone, but larry hoagland, the husband, father of three and man of god, had a ready explanation when he sat down with me. he'd been framed. >> i did not try to kill my wife. there is somebody out there who is responsible for this. there's a maniac out there. >> larry hoagland tells his side of the story and even he admits it sounds crazy. is it? coming up -- >> if i was a guy out there watching "dateline, " i wouldn't believe this. i woul