evidence. >> he hired shay's investigators to surveil his wife at the ski chalet. he called him in hong kong to report what they were seeing in real time. >> this gentleman arrived in a van, parked on a dirt road and snuck into the house. i told rob what was going on. >> same time, on-going as we're talking. that gentleman was michael del fiore, a local tv installer. on the phone, kissel took the news stoically, hung up, immediately called his wife. minutes later, there was a stir in the vermont house. >> the male came out of the house, got in his van and drove off. so rob called me back at my house, told me that he had spoken to nancy to not to let her know the house was watched. he said, nancy, don't do anything stupid. we have the children. >> it seems she had been chastened. she quickly returned to her husband in hong kong, presumably