Boston Blackie was a popular radio drama series featuring Horatio 'Boston' Blackie, a former jewel thief turned amateur detective who used his criminal knowledge to help solve crimes. In "Lighthouse Ghost," episode 139 that originally aired on September 10, 1947, Boston Blackie investigates supernatural occurrences at a lighthouse. When reports of ghostly apparitions and mysterious happenings reach his attention, Blackie applies his detective skills to uncover the truth behind the alleged haunting. As typical of the series, what appears to be supernatural turns out to have a very human explanation, likely involving criminal activity concealed behind ghostly manifestations.