The Million Dollar Mystery was a film serial, which consisted of 23 episodes. Filmed in New Rochelle, NY, the story centered upon the adventures of an heiress played by Florence LaBadie. Episode No. 3 was titled “The Safe in the Lonely Warehouse.” According to an article published in the July 11, 1914 issue of Reel Life Magazine, this episode features a famous Charity Ball scene in which 120 Thanhouser players appear. The cover photo is of actor James Cruze.