 The day before the scene where Thornhill is hidden in an upper berth  was to be filmed, Cary Grant (qv) took a look at the set which had  been built and told Alfred Hitchcock (I) (qv) that it had been  constructed sloppily and would not do for the film. Hitchcock  trusted Grants judgment so completely that he ordered the set  rebuilt to better standards without ever checking the situation for  himself.