I think there was just one reported sighting of the girls walking home. I thought it was from a boy who knew them. His name was never mentioned in anything I've read. I think he is the one who waved to them.
Lyon Sisters Disappearance Remains Kensington Heights Biggest Unsolved Mystery
Researched by Barbara Ruben (Devin Place)
On a warm spring day in 1975, sisters Sheila and Katherine Lyon left Wheaton Plaza and walked toward their Plyers Mill Road home. They never arrived, vanishing somewhere in Kensington Heights.
The most vexing disappearance in Montgomery County history, the case has been recounted in the National Enquirer and generated hundreds of leads, all of which have culminated in dead ends.
On March 25, 1975, Sheila, 12, and her younger sister Katherine, 10, walked along Drumm Avenue and over to Wheaton Plaza to view the Easter displays at the mall and have lunch at the Orange Bowl restaurant. Their older brother saw them in the Orange Bowl eating pizza together around 2 p.m.
Longtime Kensington Heights resident James Mann may have been one of the last to see the two girls. He recalls waving to them as they passed his house on the corner of Drumm Avenue and Devin Place that afternoon. He said they continued down Drumm toward McComas.
According to the Missing Persons Cold Case Network, a volunteer-based Web site profiling 3,000 missing persons cases, a friend of the girls also placed the girls near Drumm and Devin Place.
Back in 1975, Mann recalled that there was a large wooded area with a cut-through path connecting the two segments of Drumm. Drumm Court and the newer houses on Drumm were years away from being built.
Police and neighbors fanned out across Kensington Heights searching for clues. Mann recalls that police asked permission to search his crawl space, along with those of his neighbors. They also checked the sewer drain on Drumm and dove in the pond at what was then the Kensington Gardens Nursing home.
I wanted to help them in any way I could, he said. It was such a tragedy.
Snipped by me.
Most here don't consider this sighting credible,but who knows?