Continuity mistake: In Khan's lair, when the Shadow is struggling to stop the Phurba from attacking him, the Shadow is dragged across the floor by the Phurba while holding it in his right hand. In the next shot, he is now seen holding the Phurba with both hands.
Continuity mistake: The second time in the Cobalt Club, Margo comes over to the table and sits down. As they talk, Wainwright puts down the Martini, and has his hand on the glass. Then in closeup, his hand is up with a fork. Cut to a shot of Margo, he's sipping the martini. He calls for the waiter, he's putting down the empty glass. Cut back to her, he's putting down the glass again.