The Shop Around the Corner (1940)

Continuity mistake: As he is talking, Jimmy Stewart is writing on small boxes and placing them in a pile. He sets one down, and when the camera changes, he's suddenly got one in his hand again. (00:27:35)

Jack's Revenge

Continuity mistake: When Mr. Kralik is showing Mr. Pirovitch his letter, in the first shot Kralik is holding one page in his right hand and the rest of the pages in his left. The immediate close up shows all the papers in one pile, held by both hands. (00:05:35)

Jack's Revenge

Continuity mistake: When Mr. Kralik and Ms. Novak are carrying boxes out of the stock room after an argument, Mr. Kralik has 5 boxes in his pile. The shot changes and he now has only 4 boxes.

pinkwafer

Alfred Kralik: There might be a lot we don't know about each other. You know, people seldom go to the trouble of scratching the surface of things to find the inner truth.
Klara Novak (Miss Novak): Well I really wouldn't care to scratch your surface, Mr. Kralik, because I know exactly what I'd find. Instead of a heart, a hand-bag. Instead of a soul, a suitcase. And instead of an intellect, a cigarette lighter... which doesn't work.

Klara Novak (Miss Novak): All my knowledge came from books, and I'd just finished a novel about a glamorous French actress from the Comedie Francaise. That's the theater in France. When she wanted to arouse a man's interest, she treated him like a dog.
Alfred Kralik: Yes, well, you treated me like a dog.
Klara Novak (Miss Novak): Yes, but instead of licking my hand, you barked.

Alfred Kralik: Flora, take a letter. Ah... To whom it may concern. Mr. Vadas has been in the employ of Matuschek and Company for the last two years, during which he has been very efficient as a stool pigeon, a troublemaker, and a rat.
Ferenc Vadas: Now look here.
Alfred Kralik: And if he doesn't clear out of here he's going to get a punch in the nose! Yours very truly, Alfred Kralik, Manager, Matuschek and Company.

Question: When Mr. Matuschek is recovering in the hospital and explaining to Mr. Kralik why he suspected him of having an affair with his wife, he mentions having received an anonymous letter warning him of his wife's infidelity. But who sent the letter? To all appearances, the errand boy Pepi seems to know everything that is going on, or nearly so. He doesn't know the cad is Mr. Vadas, but he probably has a good idea about what is going on from Mrs. Matuschek's phone calls. Still, the author of the anonymous letter to Mr. Matuschek is never revealed. Or is he?

Iain