King Ottokar's Sceptre: Part 2 - S2-E5
Audio problem: Tintin shouts "No!" after he's told to get arrested. His mouth becomes out-of-sync mid-sentence. (00:29:25)
King Ottokar's Sceptre: Part 2 - S2-E5
Audio problem: When Tintin says the detectives should question the professor, one of them says "precisely" without moving their mouth. (00:35:10)
Chosen answer: It is a pill that makes alcohol taste disgusting.