On December 15, 1994, Joann Katrinak and her 3-month-old son, Alex, disappeared from their home in Pennsylvania’s Lehigh Valley. Four months later, authorities found both bodies in Heidelberg Township. After eliminating Andrew Katrinak, Joann’s husband, as a suspect, police moved onto Patricia Rorrer, Andrew’s ex-girlfriend. Rorrer had called the Katrinak household only 3 days before Joann and her baby disappeared. Rorrer had asked to speak with Andrew, who was home during the call, but Joann refused to pass over the phone to him. Investigators suspect this action triggered Rorrer’s jealous rage and drove her to kill. The case against Rorrer relied heavily on six hairs recovered from Joann’s car as well as two strands that were found where the bodies had been dumped. DNA testing showed that Rorrer could not be excluded as the source of the hairs. In addition to these findings, the bodies of Joann and Alex had been found along a rural trail where Rorrer used to ride horses. Rorrer was c