The convicted killer known in Las Vegas as the "Black Widow" is going public. Margaret Rudin has granted her first TV interview since serving 20 years in prison. ABC is dedicating two hours to the sit-down on 20/20 beginning at 9 p.m. 13 Investigative Reporter Joe Bartels covered Rudin’s release extensively and has access to just-released clips of the interview. Make sure to visit ktnv.com for access to the full special Black Widow: Web of Deception. The 20/20 special airs at 9 p.m. local time, then join us immediately after for 13 Action News Live at 11.