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Julie Rea was in prison for her 10-year-old son's murder until a "20/20" viewer helped crack open the case, leading to a serial killer confessing to the crime. One of his attack survivors speaks out.
Before serial killer Keith Hunter Jesperson, known by his nickname "Happy Face Killer," turned himself in in 1995, authorities believed Laverne Pavlinac and her boyfriend murdered his first victim.
Diane Sawyer's exclusive with the Turpin children who escaped parents' house of horror.