The Seven Crystal Balls: Part 2 - S3-E4
Character mistake: Tintin mentions that they passed a beige car on their way to the road block with four people inside. First, they did not pass this car. The car stopped at the road block, and after they were asked about the black sedan, they drove away. Tintin, Haddock and the detective then arrived at the road block in their car, coming in from a different lane. Second, the car that was stopped at the road block only had three people inside, not four. (00:32:20)
The Red Sea Sharks: Part 1 - S3-E1
Character mistake: Tintin follows Dawson out of the hotel and notices him getting into a green car. Tintin then gets into a taxi and tells the driver "Follow that black Jaguar", instead of the green car that Dawson was shown in. (00:08:45)
The Seven Crystal Balls: Part 1 - S3-E3
Character mistake: When Sanders is finishing the translation, the last sentence that he writes down is "Over the mountains and beyond the sea", but the sentence shown on the paper is "les mois et les monts"; this is French for "The months and the mountains." The real translation for "Over the mountains and beyond the sea" is "Sur les montagnes et au-delà de la mer." Even if the translation is carrying on from the previous line, a majority of the final sentence would still be incorrect in the translation. (00:02:25)
Chosen answer: It is a pill that makes alcohol taste disgusting.