The Adventures of Superman
The Case of the Talkative Dummy
S1 E3:
Perplexed by the baffling mystery of armored car robberies in which the entire car disappears, Clark Kent, Lois Lane and Jimmy Olsen solve the case. They learn how a ventriloquist's dummy is used to transmit confidential car routes at the climax of the Superman television drama, "The Talkative Dummy."
Starring
Syd Saylor, Pierre Watkin, Tristram Coffin