Laurie takes the card of "A.P. Smith" out of the file cabinet twice.
As soon as A.P. Smith boards the ship, he immediately goes to Morella's office and asks for him. Laurie in order to ID him then opens the file cabinet and pulls out an index card containing his photo. But in the file photo, A.P. Smith has on the exact same clothing that he is presently wearing when he walked into the office. It appears that the photo was taken that same day on the set.
As Laurie is being escorted to the elevator to go to court, a shadow of the boom microphone is visible on the wall to the right of the elevator.
William Pawley and Murray Alper are billed as "Frank" and "Louie," and are called by those names throughout, but in a note concerning a murder, they are listed as "Buggs Tomski" and "Mickey Moran."