Murder by Television

A professor perfects a working television system and invites investors to a demonstration, only to die on camera when a mysterious ray intercuts the broadcast. Bela Lugosi plays a dual role — the professor's loyal assistant and a sinister European interloper — in a whodunit where the murder weapon is the new technology itself. Shot in 1935, when television was still laboratory speculation, the film treats live broadcast as exotic enough to carry a thriller. June Collyer plays the professor's daughter caught between suspects. Made by poverty-row outfit Cameo Pictures, it entered the public domain after its copyright was never renewed.