On April 27, 1967, 10-year-old Marianne Schuett disappeared while walking about 400 yards from Kilbride Public School to her home in the Kilbride area near Burlington, Ontario. She was last seen at about 4:00 p.m. wearing a red and beige reversible jacket, a blue sweater, a green plaid skirt, and blue sneaker-style shoes. Marianne had brown, ear-length hair with bangs and greenish-blue eyes.

Witnesses reported seeing her near the school’s driveway speaking to an unknown man in a small, dark blue or black European-style Renault station wagon; one witness saw a girl matching Marianne’s description get into the vehicle. A composite sketch described the man as in his 40s with a thin face, glasses, and a fedora.

A witness who saw a nervous man cleaning a dark blue Renault at a Dundas picnic area two days after the disappearance wrote down the plate number, but that lead was not immediately pursued. Years later the plate traced to a Burlington man with a known history of sexual offending; he killed himself shortly after police confronted him in 1990. Numerous searches, including a 2011 well excavation that recovered only animal bones, have failed to locate Marianne. The community has continued searches and set up a memorial bench in her honour.