Visible crew/equipment: The Great Santini makes a vase of flowers appear on a table. Before he holds up a cloth to conceal the vase as it appears, the tips of the flowers can be seen beyond the far edge of the table. As he pulls the cloth away, there is a quick glimpse of the hand of the crew member who put the flowers on the table. (00:11:00)
Character mistake: A valet tells Columbo that automobiles belonging to Sauri embassy personnel are repaired at a service station two blocks away. Later, when Columbo is speaking with Hassan Salah, he says, "I know your cars are taken to a service station three blocks away."