Charles Henderson, who goes by his middle name, Arlin, was last seen riding his white and yellow bicycle near his family’s mobile home in Moscow Mills, Missouri, on July 25, 1991. He disappeared sometime between 5:00 and 5:30 p.m. and has never been heard from again. Three months later, his bicycle was discovered in a bean field off North Ethlyn Road, approximately five miles from his home. Investigators believe Arlin’s sister, Joy Henderson-Leonard, and her husband, Robert “Bob” Leonard, may have had information about his disappearance. Joy was murdered ten years later by Robert, who then died by suicide. Authorities later learned that the couple had made statements suggesting they might have known more about Arlin’s case than they had previously disclosed. Arlin remains missing. He is a Caucasian male with blond hair and blue eyes. He had a crew cut at the time of his disappearance, a scar on his thigh, and a gap between his teeth. He was last seen wearing a camouflage-print t-shirt, camouflage-print pants with a tear in one knee, gray socks, and black sneakers.