The 'Dead Silence' movie is based on the fictional story of a vengeful ventriloquist doll named Mary Shaw. In the story, Mary Shaw was a famous ventriloquist who was wronged and killed. Her spirit then haunts those who cross her path, especially through her dolls. It's a horror - themed story filled with elements of mystery and the supernatural.
The 'dead silence real story' is completely fictional. It was designed to scare audiences with its concept of a haunted doll. There's no real - life basis for Mary Shaw or her vengeful actions through the dolls. It's all part of the horror movie's fictional narrative.