tulsa might have meant a fresh start, but the fighting continued. it turned out alaska wasn't the problem. their marriage was. on june 7th, 2011, just a couple of weeks after they'd moved into the university club high rise, josh's bags were packed and he was waiting for a ride. that's when he fell to his death. and now detectives started focusing their attention on that 25th floor apartment. >> i made sure that the upstairs was secure and went and applied for a search warrant so that we could go inside. >> reporter: once he entered the hilberlings' apartment, felton looked for evidence that maybe there had been a fight that had gone terribly wrong. but he couldn't find anything to suggest the couple had been in the throes of a violent struggle just before the fatal push. >> the furniture was all in place. you know, other than the broken window, there was nothing that would indicate that there -- any kind of struggle had taken place. >> reporter: when you think about a pregnant woman, 5'5", pushing her husband, who's 6'4", out a window like that, is