Ann Peterson was 20 when she was murdered on July 22, 1987, in Okaloosa County, Florida. Walls allegedly awakened the occupants, forced Alger to the floor and had Peterson bind and gag him before restraining her as well.

During a struggle Alger freed himself and attacked Walls; Walls cut Alger’s throat, then shot him in the head. Walls returned to Peterson, removed her gag and untied her. After learning Alger was dead, a second struggle occurred. Walls reportedly tore off Peterson’s clothes and shot her in the back of the head; Peterson survived the first gunshot but was then forced face-down and fatally shot. The two bodies were found later that day when Alger did not report to work.

Investigators obtained a search warrant for Walls’ mobile home and seized evidence that linked him to the killings. Walls was arrested on July 24, 1987. His case is tied to several other murders in Okaloosa County during the mid-1980s.