her stay. and said so in an e-mail. along with another nugget. >> he wrote, our marriage has seen better days, i don't see it trending up. i remember that really striking a chord with me. i didn't know that their marriage had seen better days. >> reporter: of course investigators wanted to interview jason young. maybe he could tell them something. but he refused to talk to them. >> he talked to the lawyer. and then under the advice of counsel, he declined to speak with us at all. >> reporter: didn't ask? didn't ask how his wife died? >> no. >> reporter: perhaps, investigators thought the business trip deserved a second look. they want to the hotel. poked around and discovered some odd activities that night in a stairwell near an exit. >> there was a camera there unplugged. >> really. >> yes, one of the side exits for the hotel. one of the fire stairs that go down to the first floor. >> reporter: any other tampering done? >> the door that was adjacent to where the camera was located the door also had been propped open