The Fatal Flaw: A Special Edition of 20/20 it's a TV series with David Muir, Amy RobachFull cast. Original title The Fatal Flaw: A Special Edition of 20/20 Genres Documentary, News.
Firsthand accounts from authorities and journalists illuminating four disturbing events as they describe the twists and turns of the investigations and the breakthrough moments that led investigators and police to each killer's doorstep.