>> no. >> did you poison or wife? >> no. >> please remain still, test is about to end. >> nine times the investigator asked the same questions, and every time uto -- and he seemed sure, and passed. >> testing went on, the polygraph are eventually stopped, let him take a break, came back in. >> let's have a seat there. >> confronted him, and said, i don't believe anything you're saying. >> so, you filled your test. not only do flu tests, you failed miserably. >> that's when you can. vest >> right then and there. >> right after the. polygraph >> race broke. the details of how we tried to kill his wife began tumbling out. >> i can't really remember, most visible or. >> ray stole the investigated that the first time he fed thallium to brigida, it was in a sandwich.