here again is byron pitts with his exclusive prison interview with michael beard.ow claiming the wrong man is behind bars. >> a man accused of killing his wife in their home in september appeared in court today. >> clayton pleaded not guilty to second-degree murder. >> reporter: facing multiple charges for the killing of his wife, kelly, thomas clayton says he's innocent and has an alibi to prove it. but prosecutors say the evidence points to a different story. >> we found that thomas had been dating women even before the murder of kelly, but certainly after the murder of kelly as well. >> reporter: as the investigation proceeds, a new suspect comes into the picture. >> thomas clayton and michael beard knew each other for at least five years. >> mr. beard, i'm byron pitts. >> reporter: i sat down with clayton's former employee, michael beard, for his first and only interview from prison. >> go-to guy, he needs something done, his handyman? how would he describe it? >> he'd describe me as being a reliable worker. >> michael beard, children in south carolina, a child

beard, i'm byron pitts. >> my colleague byron pitts sat down with clayton's former employee, michael> he'd describe me as being a reliable worker. i'm the first one he called. if he needed someone to stay longer, he knew i would stay longer. first there, last to leave. >> michael beard worked for thomas clayton. initially, he was hired to work for clayton's cleaning service. they would go in and clean homes that were flooded or after a fire. he became thomas clayton's go-to guy, his handyman. >> if you have water damage at your home as a result of a hurricane or flood, insurance company might hire servpro, send them to your home. >> i would come in and cut the drywalls, pull up the rugs. anything that got infected by the water that was there, we would just basically remove. >> one of the extraordinary things about michael beard is how incredibly ordinary he is. he had children in suth carolina. he also had a child in upstate new york. he was the primary breadwinner. he was living paycheck to paycheck. and so when he met thomas clayton, this local sports hero who had a business, he th