In a near to last scene of this '55 Hitchcock movie, Shirley McClain is in a rocker explaining the sequence of Harry's events and her sweater is wet over her left breast. They cut to her out of the rocker, still continuing with the explanation, and her sweater is completely dry. Unusual for Hitchcock.
I noticed this while watching the movie with my mom some time ago.We thought it was really funny(and it is).Shirley must have been nursing at the time.