Sheila Mary Lyon
Wheaton, MD

Sheila and her younger sister, Katherine (MP # 1837), were last seen at the Wheaton Plaza Shopping Center in March 1975. Sheila was last seen wearing farsighted gold wire rimmed glasses. Katherine has a birthmark on the inside of her upper thigh. In 2014, the Montgomery County Police Department asked for the public’s assistance with any information related to a late 1960's or 1970's model station wagon believed to be involved in the girls’ disappearance.
Submit a Tip or Sighting
Tips go to the agency dashboard for review. Call 911 first if this is urgent or happening now.
CaseTrace is not an emergency reporting system. If someone is in immediate danger, call 911. For official tips or urgent case information, contact the investigating agency directly.
CaseTrace is for awareness and responsible information sharing only. Do not approach, confront, follow, accuse, or investigate anyone based on case information. Submit credible information through the proper tip channel or contact the investigating agency directly. If someone is in immediate danger, call 911.
Submitted tips are not displayed publicly. They are intended for authorized review only.
Helpful tips include where, when, what you saw, vehicle details, direction of travel, photos, or other specific facts. Avoid guesses, rumors, or accusations.
Do not submit false, harassing, threatening, or intentionally misleading information.