A Houston couples grandchildren are sleeping on the floor at the foot of their bed when they're awoken to the sound of glass breaking and someone walking up the stairs. The older boy hides under the blankets and hears six gunshots. There were two suspects from day one but it took more than three years for police to make an arrest thanks to an inventive Private Investigator and his new employee.
Two books have been written about the murders of James and Virginia Campbell: Cold Kill: The True Story of a Murderous Love by Jack Olsen in 1987 and Daddy's Girl by Clifford Irving in 1990.
Here's an interview with Kim Paris who was the one who tricked David to confessing and a great feature with her from People magazine.