but he did not survive five months of marriage to wendi davidson. >> he was telling her that he had a secret mission he was going on. i said, wendi, that man hasn't got sense enough to pour piss out of a boot. >> you can't make this stuff up. like, dean koontz couldn't make this up. >> how is it that a wife finds the only way to get rid of a husband is through murder? it doesn't sound right. it doesn't feel right. >> i did not kill him. >> we all know that wendi is a pathological liar. >> who killed mike severance if it wasn't her? ♪ >>> i'm traveling to the gatesville correctional facility, about an hour west of waco. i'm there to meet wendi mae davidson, the former veterinarian, current convicted murderer. from day one she has insisted she wasn't responsible for the death of her husband, staff sergeant michael severance. when you do interviews like this, you always wonder what it's going to be like looking into the eyes of a killer. but wendi doesn't look or act like any of the killers i've talked to. i'm going to cut to the chase and get right to business. you know, you've basicall