michael, the best friend, tried to cheer him up, changing the subject to the exciting new chapter. his fiancee would be moving in with him in a few days. in fact, paul was on his cell phone with her as he pulled into his driveway after work on wednesday, august 23rd. as the fiances chatted, he remarked about an empty hamburger wrapper lying on the floor. then he took her to task for leaving the central air conditioner going full blast. >> paul was being paul and made the crack, i can't believe you left the freaking air conditioner on. she said, no, i didn't. >> that's when she heard paul scream and the line go dead. his months of growing fear had been validated by at least seven gunshots at close range. he never had a chance to tell all his doubters i told you so. coming up -- gunned down in his own house. were others in danger? >> we all walked around wondering if we were next. on the hit list. >> police hear a conspiracy