My mother, Katharina Brow, was robbed and brutally murdered in her home in Ayer, Massachusetts on May 21, 1980. In May 1983, Kenneth Waters was arrested and convicted of first degree murder and armed robbery. In March 2001, Betty Anne Waters helped to free her brother based on existing DNA evidence as portrayed in the movie Conviction released in October 2010. Food For Thought - A swatch of blood was found and tested doesn't mean Waters is innocent.