Sheila And Katherine Lyon.
The year was 1975. Sheila and Katherine Lyon were supposed to meet friends for a day of fun in a shopping mall in Maryland. But they disappeared and were never seen alive by their loved ones again.
After over 40 years without answers, a pair of cold case detectives decided to look at the investigation with fresh eyes. They examined the case as if it had just been called in and pored over case records. One account stood out from a man named Lloyd Welch. He had claimed to have seen the girls when they were being abducted. After failing a polygraph, he was deemed to be an unreliable witness.
The detectives decided to look into what Welch had been doing for the last 40 years and discovered that he had accrued a lengthy criminal record, mostly for sex crimes against children. So the detectives decided to reinterview him.
After eight hours of interrogation, Welch’s story changed multiple times. He did not admit to killing the girls. Instead, he said that he had participated in the abduction and had been a witness to the dismemberment of one girl. Welch also stated that the bodies of both sisters had been taken to the land owned by his family in Bedford County and burned.
He blamed the killings on his father and an uncle, but there was never any evidence to substantiate those claims. Lloyd Welch pleaded guilty to the deaths of the Lyon sisters and two other sex crimes involving children.