The Crab with the Golden Claws: Part 1 - S1-E1
Continuity mistake: After Tintin runs into the storage room, he barricades the door with several crates and Allan and the three bad guys are shown trying to get in by pulling on the door handle. At the end of the shot, the door handle is pointing upwards, but in the shot of Allan and three bad guys, the other end of the door handle is completely straight. (00:14:30)