This article is from the Movie Trivia, by Murray Chapman muzzle@cs.uq.oz.au with numerous contributions by others.
- DIRCAMEO(Alfred Hitchcock): about 13 minutes into the film, on the
left side of the reunion photograph.
- The movie was shot in 3-D although it was never released that way until
after Hitchcock's death.
- Hitchcock arranged to have 'Grace Kelly' (qv) dressed in bright colors at the
start of the film and made them progressively darker as time goes on.
 
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