On 2 December 1919, a day after completing a million-dollar business transaction in Toronto, entertainment tycoon Ambrose Small mysteriously disappeared. Despite an international search, no trace of him was ever found. Police suspected foul play and investigated Small’s wife and personal secretary. However, neither the police nor a private investigator uncovered any evidence connecting them to his disappearance. The Ambrose Small case remains one of Canada’s most perplexing and legendary unsolved mysteries.