48 Hours - Season 40

At just 13 years old, Trysten Mullis found his mother Amy on the ground with a corn rake sticking out of her back on their family's high farm. Now 21 years old, with his father behind bars for murder, Trysten speaks out for the first time and maintains that his father is innocent.

Judy Weaver was found murdered in her residence in Everett, Washington, in 1984. Decades later, a clever detective catches the elusive killer with a stick of gum.