Goofs

Although the credits name Raymond Huntley's character as Kampenfeldt, the dialogue (and his office door at the German Admiralty) give it as Kampfeldt.

When Herzog answers the phone, it continues to ring after he has picked up the receiver.

The wording of the British passport read out by Charters is incorrect as it is different from the American wording in three major ways.. Firstly, the passport holder is not referred to as him or her but as "The Bearer". Secondly, British passports uniquely in the world, not only request that those concerned assist the bearer to be allowed proceed without let or hindrance, but request and require it. Thirdly, the Secretary of State for Foreign Affairs at the time of issue is never scheduled by name.

In the background, a radio reports that Adolf Hitler has just ordered an invasion of Poland as Dickie Randall begins his mission in Germany. After the passage of just one night, it is reported that Britain is at war with Germany. However, Germany attacked Poland on 1st September and Britain went to war with Germany on 3rd September, hence there would have been two intervening nights.

Rex Harrison's character makes a British-style military salute while disguised as a German major.

Just after Anna meets up with her father, around 25m into the movie, there is a lone shot of a Nazi flag waving with a swastika in the center with the normal 45° turn. The swastika, however, is incorrect as it is geometrically clockwise/left-facing and a Nazi swastika is drawn counterclockwise/right-facing. The film has been flipped/reversed, probably intentionally.

When Dickie and Anna come downstairs in the hotel elevator, the shadow of the elevator platform is moving down, but the shadows of the people inside the elevator are standing still.

At eight minutes in, Axel Bomasch escapes Prague on an airplane. The problem is, the airplane he escapes on (a Lockheed Model 10 Electra) carries British registration G-AFGN, when it should be a Czechoslovak registration starting with either B-L (pre-1928) or OK- (post-1928).

Early in the film, there is a scene where Anna's father boards an airplane. When the crew member closes the door, there is no handle on the outside - something overlooked by the set builders of this obvious mock-up. Also, the plane's exterior bears no resemblance to the airplane shown taking off a couple of shots later.

The British spy, Dickie Randall (played by Rex Harrison), who has managed to dupe the Nazis into believing he is a German Army officer, is being openly discussed in their hotel room by Anna Bomasch and Axel Bomasch (played by Margaret Lockwood and James Harcourt respectively). Despite the fact that Anna and Axel are under detainment and likely to suffer torture if they refuse to cooperate with the Nazis, they are totally oblivious to the fact that their room could very well be bugged or their incriminating conversation overheard by someone listening from an adjacent room.

Understandably puzzled as to how and why Dickie has suddenly appeared in Germany disguised as a German officer, Anna loudly asks her father Axel, "...but how did he manage to get into the German Admiralty as a Nazi officer?". Under the circumstances, whispering would have been the wiser option. Anna is incorrect in that his disguise is as an army corps of engineers officer and not a Nazi or SS officer.

When they arrive in Munich, the first Gestapo car has a Mercedes hood ornament but appears to be a Packard, probably a model Super 8. This car has a distinctive grill shape and small fins on the headlight housings, as does the car in the movie.

While on the train Randall, mentions England being led by Churchill. The film is set in September 1939 when the Prime Minister was Neville Chamberlain. At the time Winston Churchill was merely a back-bench MP until the 3rd Sept when he was appointed First Lord of the Admiralty and given a seat on the War Cabinet; he would not ascend to Prime Minister until May 1940.

As is true of many movies in the early WW2 period, German helmets are the 1917 ones and not the M35 that would have been current. Further, rifles with bayonets are all the WW1 longer version compared to WW2 Mauser K98. The K98 is shorter than the original Mauser 98.

At the climax, Charters and Caldicott are nowhere to be seen on the cable car landing. It's inconceivable that they would leave while Dickie's safety was still in question.

Ulrich Herzog requests "a report of the copy" instead of "a copy of the report," as he surely intended to say.