Mariam Debra Peters was 16 when she left her Willowdale home on the evening of Friday, November 7, 1975, to visit her ailing grandfather at Mount Sinai Hospital. A Grade 11 student at A. Y. Jackson Secondary School, she was dropped at Finch subway station about 6:30 p.m. and traveled downtown alone after her boyfriend fell ill. At about 8:20 p.m. she was found near the top of an escalator at St. Patrick station, critically injured with 16 stab wounds. Nurses arriving for work discovered her and she was taken to Toronto General Hospital, where she survived in critical condition until dying on November 11, 1975; a brain hemorrhage from her injuries was reported to have contributed to her death.

Police identified a person of interest who was also linked to a second stabbing ten minutes later in a parking lot near Simcoe and Wellington; that victim survived and escaped. Descriptions circulated of a white man in his twenties or thirties, medium build, dark hair and eyes, soft-spoken, about 5 feet 8 inches to 5 feet 10 inches, clean-shaven. A $10,000 reward was offered, but no one was charged, and the case remains listed among the city’s cold homicides.

Patrick or downtown stations on that November evening and notice anything unusual?