Katherine May Wilson, known as Kathy, was 12 when she disappeared on October 20, 1970, while walking home in Kirkland Lake, Ontario. That afternoon she had gone to a local store to buy groceries for her mother; items she carried included two loaves of bread, a can of milk, a box of instant potatoes, cigarettes, and a package of wieners. She was last seen on Harvey Kirkland Road, about 4 feet 9 inches and 106 pounds, with black curly collar-length hair and brown eyes, wearing a blue blouse, red bell-bottom pants with a white flower design, and brown shoes.

She phoned her mother just before 5:00 p.m.; her two sisters planned to meet her halfway but never saw her. Extensive searches with police dogs, helicopters and boats found nothing, and the case went cold for decades. In 2009 a distant cousin, Barry Vincent Manion, then 60, was arrested, confessed, and later pleaded guilty to second-degree murder, saying he had offered her a ride, taken her to a secluded wooded area, and choked her when she ran; he said he buried her body and the groceries but searches of the site did not recover remains.

Does anyone have information about Katherine’s last known route or the people she might have been seen with that afternoon?