Murder by Television / Invisible Killer

Murder by Television (1935) - During the presentation of his wondrous, and much desired, new television broadcasting invention Professor James Hougland is murdered! Surrounded by suspects, many after his invention for their respective companies it's up to Police Chief Nelson to identify the killer. The Invisible Killer (1939) - Sue Walker is a feisty reporter who delights in showing up Detective Jerry Brown with her scoops on ongoing investigations. But now as the DA is trying to pressure the gambling rackets to shut down quietly someone starts killing of the gambling kingpins seemingly without leaving any trace and well informed Sue Walker might just be a suspect.