The Red Sea Sharks: Part 1 - S3-E1
Revealing mistake: When Tintin and Haddock bump into General Alcazar, after Tintin says "General Alcazar", the shot cuts to Alcazar saying "Ah, yes" in a confused manner. When he is saying this, there is a man walking in the background, about to walk out of frame. Just as the man is about to exit the frame, he vanishes. (00:01:45)