A couple vacationing in Morocco with their young son accidentally stumble upon an assassination plot. When the child is kidnapped to ensure their silence, they have to take matters into their own hands to save him.
You can now watch The Man Who Knew Too Much online on the following streaming providers in the United States.
| Directing | Alfred Hitchcock | Director |
| Writing | John Michael Hayes | Screenplay |
| Production | Alfred Hitchcock | Producer |
| Sound | Bernard Herrmann | Original Music Composer |
| Camera | Robert Burks | Director of Photography |
| Editing | George Tomasini | Editor |
| Art | Henry Bumstead | Art Direction |
| Art | Hal Pereira | Art Direction |
| Art | Sam Comer | Set Decoration |
| Art | Arthur Krams | Set Decoration |
| Writing | D.B. Wyndham-Lewis | Story |
| Costume & Make-Up | Edith Head | Costume Design |
| Directing | Howard Joslin | Assistant Director |
| Visual Effects | Farciot Edouart | Visual Effects |
| Visual Effects | John P. Fulton | Visual Effects |
| Sound | Gene Garvin | Sound Recordist |
| Sound | Paul Franz | Sound Recordist |
| Crew | Abdelhaq Chraibi | Technical Advisor |
| Crew | Connie Willis | Technical Advisor |
| Writing | Charles Bennett | Story |
| Production | Herbert Coleman | Associate Producer |
| Costume & Make-Up | Wally Westmore | Makeup Supervisor |
| Writing | Angus MacPhail | Writer |
| Production | Tony Regan | Casting |
| Production | Edward R. Morse | Casting |
| Production | Bill Greenwald | Casting |
| Production | Gary Fifield | Casting |
| Production | William Cowitt | Casting |
| Costume & Make-Up | Virginia Darcy | Hairdresser |
| Costume & Make-Up | Dan Greenway | Makeup Artist |
| Production | Hugh Brown | Assistant Production Manager |
| Production | Frank Caffey | Production Manager |
| Production | C.O. Erickson | Unit Production Manager |
| Production | Cecil R. Foster Kemp | Unit Manager |
| Directing | Ralph Axness | Second Assistant Director |
| Directing | Herbert Coleman | Second Unit Director |
| Directing | Ned Dobson | Second Assistant Director |
| Directing | Basil Keys | Second Assistant Director |
| Art | Walter Broadfoot | Props |
| Art | Dorothea Holt | Production Illustrator |
| Art | Neil Wheeler | Props |
| Sound | Bill Wistrom | Sound Editor |
| Sound | Henry Keener | Sound Recordist |
| Crew | Ted Mapes | Stunts |
| Camera | Neil Binney | Focus Puller |
| Lighting | Adolph Froelich | Electrician |
| Camera | Bobby Greene | Assistant Camera |
| Lighting | Vic Jones | Gaffer |
| Camera | Ken Lobben | Still Photographer |
| Lighting | Don Ring | Gaffer |
| Camera | Leonard J. South | Second Assistant Camera |
| Camera | Darrell Turnmire | Second Company Grip |
| Camera | Paul Uhl | Assistant Camera |
| Costume & Make-Up | Phyllis Dalton | Costume Supervisor |
| Costume & Make-Up | Joan Joseff | Other |
| Costume & Make-Up | Leonard Mann | Wardrobe Master |
| Costume & Make-Up | Lee Forman | Wardrobe Master |
| Editing | Sam Vitale | Assistant Editor |
| Sound | John C. Hammell | Music Editor |
| Production | Art Sarno | Publicist |
