Blood and Water

In 2001, Leslie Preer was found brutally murdered in her home in the wealthy suburbs of Washington, D.C. Investigators initially suspected her husband, but bombshell DNA evidence revealed an unknown male at the scene. With extensive access to original police tapes and interviews with cold case detectives, this six-part series from 20/20 and ABC Audio tells the story of a decades-long wait for justice and the cutting-edge investigative techniques that finally caught the killer.