This episode must have been what Child’s Play was based on or copied from. The story is seen in Batman’s universe. A dummy powered by a ventriloquist gets loose and takes over his act. Then, eventually, they switched places. The dummy is the man, and the man becomes the dummy after hours of torment. His manager resigned, and he hears voices. Now he’s the dummy, and the dummy is in control. Not scary at 3 pm, but it entertained me for half an hour.
The Twilight Zone: Review: The Dummy