When Gilmurray visits Adam after losing the trial, Adam is at the beginning of trying to piece together a rather large puzzle with many pieces scattered around the desk. However, on the following cut after a brief conversation with Gilmurray, the puzzle is nearly complete with only a few pieces left to insert.
The horseshoe above Tony's office door initially is mounted high enough to allow the door to open and close, but when Tony takes it down as he moves out of the office, the horseshoe slightly overlaps the inner edge of he door frame. The horseshoe was lowered for the latter scene because it was too high for William Powell to reach comfortably.
Gilmurry is on the phone in his office. As he hangs up, he looks toward the door and has a surprised look on his face. In the next scene, the door is just opening, and Adam walks into the office.
When St. Johns and Adam are getting ready to leave for lunch, she is standing away from the desk holding her purse with both hands and turning towards the door. On the next cut, St. Johns is leaning with her back against the desk with both her hands behind her.
When Tony enters Gilmurry's office after Gilmurry is frantically attempting to locate him, Tony is wearing a glove on his right hand and carrying one in his left hand. The camera cuts away and when it returns, he is wearing the glove on the left hand and carrying one in his right hand.
(at around 1h 1 min) A fly lands on Tony's forehead. However, while an interesting observation, flies sometimes do land on people's faces.
(at around 10 mins) When Tony and Olga are at dinner, it appears Tony pays the $4 check with a single Morgan silver dollar - worth only $1 at the time.
However, the actual payment is not shown on screen. The waiter returns with a silver dollar on a tray as Tony's change, which Tony waves away as a generous tip, prompting Olga to chide, "There you go, throwing money away again."
When Gresham goes to record Tony's call to Virginia, there already are grooves cut into the full disc, indicating it had previously recorded upon and cannot be recorded over.
When Dr. Gresham is sitting in the chair in Tony's office, then goes to get up, a shadow of the boom microphone is visible on the wall above and behind him.
The newspaper article announcing the breakup of the Bentley-Adam law partnership misspells Bentley's name as "Bently".
As Dr. Gresham is leaving Adam's office, Olga enters the office at the same time and loudly slams the door closed. Adam is looking down at some papers and without looking up says, "come in". Telling someone to come in is a reaction to a door knock rather than a loud door slam; thus, the reaction is an error.