Factual error: When Kharis is being examined by Petrie, he says that the lines on his face were caused by him being buried alive. In the next sentence he goes on to say that Kharis shows the best example of the embalmer's art that he has ever seen. Strange - if you're planning on buring someone alive you wouldn't embalm them first - that process would kill them!
Continuity mistake: In the scene where a drunk Connor visits CK Dexter Haven at his home after Uncle Willie's party, Dexter's pyjamas and dressing gown change from shot to shot. First his pyjama top is done up, then it is open, then done up, then open again.
Continuity mistake: In the first fight scene aboard the boat, Ace's hat falls off his head. He then breaks through a door and falls down. As he stands up, the hat reappears on his head.
Continuity mistake: Near the beginning Harriet Vane produces tokens for herself & Lord Peter Wimsey of miniature handcuffs with one cuff "open to symbolise we're giving up on crime". She puts hers on as a bracelet. Immediately after & several times throughout the film it's clear hers is a set of closed handcuffs.Christopher Walters
Continuity mistake: Baxter and Beecher are riding in a horse-drawn wagon. As they go across a bridge, the train carrying the Marx Brothers approaches. Baxter and Beecher leap off the bridge, one jumping to the right and one jumping to the left, but they are side by side when they land in the river below.
Continuity mistake: When Elmer breaks up his camera when he thinks he's going mad, the pieces of the broken camera change between shots.
Continuity mistake: When Elmer chases Bugs, Bugs runs into his hole and Elmer drops his gun by the hole. But when Bugs kisses Elmer, we cut back to him and the gun has disappeared.
Continuity mistake: When Mickey hides Pluto in his suitcase, the entire handle to the suitcase breaks off and Mickey tosses away the handle. This handle reappears unbroken when Mickey takes Pluto out of the suitcase and then quickly hides him again, though it's broken again in following shots. Then at the end, when Pete tosses both suitcases off the train Mickey's suitcase has the broken handle, but when it lands on Mickey and Pluto the handle reappears unscathed once again.Super Grover
Continuity mistake: After the mouse is revived by water from Jasper, he goes up to the cat and you can see that the mouse's left hand is under Jasper's mouth, but in the next shot his hand is now near the whisker area.
Continuity mistake: When Papa Bear is drinking from the hot water tap after eating the hot porridge, the tap handle changes position between shots.