There are a few other murders that he is assumed to have done but no compelling evidence. Remember all these murders were done as a TEENAGER.
On September 16, 1986, Wall stabbed 24-year-old Cynthia Sue Condra.......She picked him up hitch-hiking.....
On May 20, 1987, Walls broke into the mobile home of 47-year-old waitress Audrey Gygi in Fort Walton Beach, raped her, and then stabbed her to death.......My friend’s aunt.
Also he’s suspected of a murder of a woman in a Miramar condo ...
https://en.wikipedia.org/wiki/Frank_A._Walls
38 years later. Ridiculous
Yeah I read all that. He qualifies as a mass murder as far as I’m concerned and like most others we’ll never know the true body count.
Keeping some of their murders secret is a way to continue to inflict pain and their last middle finger to civilized society.