The Tom Mix Ralston Straightshooters. December 8, 1941. "The Mystery Of The Black Cat". Sponsored by: Ralston cereals. . The Black Cat has stolen $1 million worth of radium. Tom jumps out of the window after him and survives! The Black Cat is apparently captured and the adventure ends as a new situation is developing on the Mexican border that needs Tom's attention, pronto! Russell Thorson, Curley Bradley.oldtimeradiodvd.com and iheartradio.com/talk