The Crab with the Golden Claws: Part 1 - S1-E1
Continuity mistake: As Tintin is rummaging through the bins, he says "It's got to be in here somewhere, Snowy." In this shot, the bin is bright blue. The shot cuts over to Snowy growling, but when the shot cuts the detectives entering the scene and one of them says "Tintin", in reaction to him rummaging the bins, the bin is now bright turquoise. (00:04:10)