Ventriloquist Jerry Morgan has failed with another love affair. The reason: when the relationship reaches the point when it is time to discuss marriage, his two dolls become mean and jealous. Morgan's dollmaker Papinek is a member of a spy ring who has stolen the secret plans for the top-secret Lafayette airplane. Since Morgan is leaving for Zurich the same night, he decides to hide the secret plan in the heads of the dolls.
Is Knock on Wood on Netflix? Unfortunately the movie Knock on Wood is not yet available on Netflix.
| Directing | Norman Panama | Director |
| Directing | Melvin Frank | Director |
| Writing | Norman Panama | Writer |
| Writing | Melvin Frank | Writer |
| Costume & Make-Up | Edith Head | Costume Design |
| Production | Melvin Frank | Producer |
| Production | Norman Panama | Producer |
| Camera | Daniel L. Fapp | Director of Photography |
| Editing | Alma Macrorie | Editor |
| Art | Henry Bumstead | Art Direction |
| Art | Hal Pereira | Art Direction |
| Art | Sam Comer | Set Decoration |
| Art | Ray Moyer | Set Decoration |
| Costume & Make-Up | Wally Westmore | Makeup & Hair |
| Sound | Victor Young | Original Music Composer |
