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)
Answer: According to Wikipedia, he is described as being a youth anywhere from 14 - 19 years old. There is no specific age.
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