Product Review
A ventriloquist with a rude dummy sees a London psychiatrist and winds up chased by spies.
![Knock on Wood [Blu-ray]](https://m.media-amazon.com/images/I/51zqIxxs1oL._SL500_.jpg "Knock on Wood [Blu-ray]")
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A ventriloquist with a rude dummy sees a London psychiatrist and winds up chased by spies.
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