40 Years After Karen Klaas Was Strangled With Pantyhose, DNA Evidence Revealed The Real Killer

Image: Earl Leaf/Michael Ochs Archives/Getty Images

Karen Klaas’ friends stand at the back door of her California home and shout out for her. In response, though, they only hear a muted cry – a shocking sound that sends them running in fear. Then, after racing around from the back of the house to the front, the group see a man exiting the door. Little do they know that he has just strangled Klaas – and it will take 40 years for investigators to figure out who he is.