and that's when brett schrauben had an epiphany. he said he was finally willing to testify against tom and sandra. but he wanted out now. the deal had to be for time served or nothing at all. >> what did you think when you heard what he wanted in order to get his cooperation? >> i thought it was outrageous. but it's not a perfect world. and the people who are likely to have some of the best, most detailed information about what takes place inside a conspiracy is a coconspirator. we needed brett schrauben. >> so what was the story? >> the story was a pretty -- pretty detailed and amazing story. >> reporter: schrauben described the whole affair on tape, laid detail. anatomy of a murder. the conspiracy was launched with a phone call from tom. >> he told me he'd offer $50,000 to kill his dad. >> reporter: he met with sandra in a parking lot. she gave him a $5,000 deposit. >> she wanted jack dead and she wanted it done at the house and to look like a robbery. she told me she would leave for x amount of time and that's when it would need