Frank Athen Walls (born October 12, 1967) is an American serial killer who has been sentenced to death for murdering five people in Ocean City, Florida between 1985 and 1987. His murders were robbery based, and his preferred weapon of choice was a knife or a gun. He was arrested at the young age of 19 on July 24, 1987, making him one of the youngest serial killers in American history. He was sentenced to death in 1991, but was re-tried and sentenced to death again in 1994.