Nicole Louise Morin was eight years old when she left her mother’s 20th-floor penthouse in Etobicoke, Ontario, on the morning of July 30, 1985, intending to meet a friend in the building lobby for a swim. She carried a bag with a towel and swimming items and wore a peach-colored one-piece bathing suit, red shoes, and a green headband. Fifteen minutes after she left the apartment she had not arrived in the lobby, and she was never seen or heard from again.

Toronto Police mounted an extraordinary response: a 20-member task force, more than 25,000 investigative hours, door-to-door searches of all 429 units, checks of underground garages, utility rooms and storage areas, and help from over 900 neighbourhood residents. No physical evidence was found. A neighbour reported seeing an unidentified blonde woman with a notebook on Nicole’s floor about 45 minutes before she disappeared; that person was never identified.

The case remains open as a long-term cold case. Authorities and child-welfare groups have released re-enactments and age-enhanced images over the years and occasionally offered rewards, but the crucial 15-minute window remains unexplained. Did anyone in the building that morning notice something that could finally break the case?