Continuity mistake: When the members of the League are attacked at Dorian's home, the fight is accompanied throughout by a blizzard of paper falling from a height, yet hardly any of the books have been disturbed on their shelves. (00:28:40)
Continuity mistake: When the assassin takes Mina as hostage and holds a knife to her throat, Mina's scarf is under his arm. Two shots later the scarf is hanging over his hand. (00:27:50)
Continuity mistake: The invisible man is seen in one shot with cream covering the majority of the front of his face but it ends towards the middle of his head. When he is in the automobile, the cream is now completely covering his head and neck. Then, when they go to see Dorian Gray, only his face is covered with make-up again. (00:17:50 - 00:22:35)
Continuity mistake: When Mina tries to see what is the composition of the powder found on the deck, the amount of liquid in the test tube changes between shots. (00:47:55)
Continuity mistake: When Quatermain arrives in London, he is greeted by Reed who leads him down some stairs. In the shot where they're going down some spiral stairs, for some reason you see a different actor (who is clean shaven) posing as Reed, going down the stairs holding the umbrella in his right hand. Then in the next shot you see the "original" actor who has a slight goatee and is holding the umbrella in his left hand. (00:13:25)
Continuity mistake: When Gray stabs Mina and pulls the sword out of her body the blade is clean, only in close-up when he wipes it there are blood stains. (01:28:00)
Suggested correction: The stains are only at the top end of the blade. We don't see the blood because the part is embedded in her.
Continuity mistake: When the Phantom's men ambush the League at Dorian's residence Sawyer is seen joining them in revealing themselves and aiming at the League (you can tell it's Sawyer by his clothing and weapon). Then during the Phantoms speech Sawyer reveals himself again as if he was never there.
Continuity mistake: When Reed's cart stops in front of the Kenyan club there's no other cart around, but when the camera angle changes there's another one passing by. There's also a huge basket on the side of the road which hasn't been there before. (00:05:20)
Continuity mistake: When the building explodes in the beginning, the man sent to recruit Quatermain walks close to him. When it cuts the man is a few feet away from Quatermain. (00:11:45)
Continuity mistake: Mina's hair turns curly whenever she is in vampire mode EXCEPT when she is in Dorian's library and attacking the goon who held a knife to her throat. (00:29:20)
Suggested correction: Because she doesn't go "Vampire mode." She simply sucks his blood.
She's can't suck his blood without turning into a vampire. Her "vampire mode" includes having fangs used for sucking blood.
She is able to control her transformation. She's progeny of Dracula himself. She's extremely powerful.
Continuity mistake: When Mina bites the attacker at Dorian Gray's house for the first time there's blood all over her face, but after she bites him the second time it's gone before she had a chance to wipe it off (even that wouldn't have removed the blood so completely). (00:28:25)
Suggested correction: We don't see what she does when she's down though. Whilst you are correct you could be forgiven for believing that she may give word her face on his clothing.
Continuity mistake: When Quatermain realizes that Skinner is in his room (on the Nautilus), he puts out the lamp and the room goes black. We hear a scuffle and then the door opens and lights the room and we see Quatermain throwing the invisible Skinner out the door. But when Quatermain shuts the door, the room does not go dark again. (00:39:50)
Continuity mistake: When the team sees the Nautilus for the first time, rising from the Thames, the water around it is churned into large waves. But in the shots looking down on the team on the dock, you can see that the water is calm and still. (00:32:50)
Continuity mistake: In the beginning when the tank is seen coming it breaks down the same gate twice. (00:01:25)
Continuity mistake: When Dorian is getting shot, the shooter's mask thing falls down. About two shots later it is back up, in the next shot it is down again. (00:26:45)
Continuity mistake: When the men attack Quatermain in Africa, at one point he hits one guy with a bottle. The bottle completely shatters and there's nothing left to hold. When it cuts back to Quartermain, he's holding a big piece of a broken bottle.
Suggested correction: You can see the bottle in his hand in the scene where it shatters.
No, you can't. The bottle completely shatters. Then in the next cut he's holding the bottle.
Continuity mistake: In the scene on deck of the Nautilus where Quatermain and Sawyer practice shooting the target balls are lying in a row next to the railing, first five, then four, but before the last shot, four again, although another target has been catapulted into the water. (00:42:20)
Continuity mistake: When Reed and Quatermain arrive in London to meet M and the carriage stops the road is empty. However, when the camera angle changes another carriage is passing by. (00:13:00)
Continuity mistake: How can the invisible man cover his face with white cream so we can see him, but his stubble is visible throughout the movie as dark brown only when he has the cream on his face? It can't be because cream's on it, because then it would be white. (00:19:55)
Suggested correction: This is likely a lighting issue as the actor is famously red haired.
Continuity mistake: In the scene where Quatermain first meets M, they're in a library with a long table in the middle. When Quatermain sits down in the chair, a folder magically appears which wasn't there before in the other shots. (00:14:15 - 00:15:15)