During "If You Can Find Me, I'm Here," Anthony Perkins wraps a scarf around his neck. In subsequent shots the scarf's gone.
As Charles Snell (Anthony Perkins) and Ella Harkins (Charmian Carr) are trying to escape from the department store and running down a store escalator, Charles is suddenly wearing the raincoat he first appears in.
As Charles and Ella escape to the loading dock, Charles closes the door behind. At the very end of the shot, star Anthony Perkins breaks character and grins.
As Charles wanders into the busy department store, several patrons stop and stare directly into the camera.
The dialogue suggests that the film is set in 1940, when the short story upon which the movie is based was written. However, portions were filmed in a real store during off-hours, so there are countless things from the '60s featured throughout, including vehicles, clothing, hi-fi record players and other electronics, and the prominently featured book "Alfred Hitchcock's Monster Museum," which was first published in 1965.