Revealing mistake: When Cary Grant walks into the office of the restaurant of his friend the kitchen has the center island to the right of the dishes tray, right of the light, and right of Cary's view to the dishwasher. There is a single row of dark tiles between the island and the cooks in blue. Later when the dishwasher turns and walks toward Cary the center island has been moved to the left. It is left of the dish tray, left of the light and is now showing three rows of dark tiles between the island and the cooks in blue.
Continuity mistake: When Cary Grant walks into the office of the restaurant of his friend, when he looks into the kitchen it has only one light hanging down. Later from a different camera angle it shows two lights hanging low enough for both to be seen from the original viewpoint.