In the long shot of the airplane, when Clementi's mother is arriving, the plane's open door can be seen to the left, but in a close-up shot the door is missing. Other features of the plane in the long shot do not match in close-up: the windows and the painted stripe on the plane, for examples.
When Clementi gets a letter from his mother he breaks the seal, then hands the letter to Kelly, then asks her to read it. She then breaks the seal again to open it and then reads the letter.
At the beginning of the movie, Clementi visits his brother at his shop. At the door Clementi says, "Aren't you going to let me in?". The brother turns and leads the way. In the next shot, it shows the brother backing up to let Clementi in.
When Sabourin first meets Mrs. Ryan, she refers to herself as a 'widower'.
At the stock market, Sabourin bought 20,000 shares of Wentworth stock at $2 a share. But the cashier's cheque he used to buy them was only worth $20,000. Sabourin opened a margin account, so he only needed 50% funds to purchase the stock.
George Sanders says to Tom Conway 'What are you staring at?' This isn't the way a man would greet his brother.