Big-screen tough guy Brian Donlevy stars as government agent Steve Mitchell in Dangerous Assignment. Mitchell is dispatched all around the world, and with each stamp of his passport he lands neck-deep in danger. This popular espionage adventure series aired for several years on radio and spawned a television series also starring Donlevy. We'll hear "Find 100,000 Missing Barrels of Oil," originally aired on NBC on May 17, 1950.