(1944) Frank Jenks, Robin Raymond, H.B. Warner, Ray Walker. Reporters Jenks and Raymond try to get an interview with the head of a big foundation regarding a revolutionary new listening device. They soon end up at the lab of the real inventor, H. B. Warner. Before they know it they’re knee-deep in mystery with missing blueprints, disappearing and reappearing corpses, and lots of gun play. They even get accused of murder. Lots of PRC fun.