Secret Agent X-9 (1937) (DVD)
12 THRILLING CHAPTERS! HEART STOPPING ADVENTURE!
When the crown jewels of Belgravia are stolen, Secret Agent X-9 (Scott Kolk) is sent to investigate. With the help of Shara Graustark (serial icon Jean Rogers) our hero soon discovers this to be no ordinary heist but the work of a mysterious master criminal known only as Blackstone.