On March 25, 1Lyon sisters, 12-year old Sheila and 10-year old Katherine, went to Wheaton Plaza Shopping Center in Wheaton, Maryland. When the girls did not come home that night, their parents called the authorities, leading one of the largest police investigations in the area’s history. Over a week-and-a-half later, the Lyon family would receive a phone call from an individual demanding $10,000 for the return of their daughters. Even though this ransom was left in a courthouse restroom, no one ever showed up retrieve it.

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The main suspect in the Lyon sisters’ disappearance is a mysterious man carrying a microphone and a tape recorder, who was seen talking to the girls at the mall that day. Two weeks later, a witness came forward to claim he saw Sheila and Katherine bound and gagged in the back of a station wagon being driven by someone who resembled the same man from the mall. However, none of these leads ever panned out, so the identity of this man and the ultimate fate of the Lyon sisters is still unknown.