Prisoners of the Sun: Part 1 - S3-E5
Plot hole: When Tintin is on the boat, he is totally dry. Tintin however had just been in water, so he should be wet. (00:05:40)
Prisoners of the Sun: Part 1 - S3-E5
Continuity mistake: On the ship, when the man walks onto the deck, he is standing a few inches away from the lining on the floor. After the cat meows, he turns to leave, and he is suddenly standing directly on the lining on the floor. (00:06:15)
Prisoners of the Sun: Part 1 - S3-E5
Other mistake: After the man on the ship tells Tintin that Calculus' punishment is death, he yells for Alonzo, and Tintin then punches him. When the man is punched, it is apparent that Tintin's fist never even enters the frame. There appears to be a flash effect indicating that he had been punched, but Tintin's fist is never shown hitting him. (00:07:05)
Prisoners of the Sun: Part 1 - S3-E5
Revealing mistake: When Tintin is swimming back to the boat after escaping the ship, Haddock is quickly rowing back and forth to reach him in time. As Haddock rows, the bars used to place the oars through can be seen moving back and forth, along with the movements of the oars, even though the bars are supposed to remain still during the oar movements. There are also frames from this shot where the bars vanish from the frame entirely as Haddock rows. (00:07:25)
Prisoners of the Sun: Part 1 - S3-E5
Audio problem: After Tintin tells Haddock that they might be able to catch up to the kidnappers by train, Thomson and Thompson are shown walking and breathing heavily, due to exhaustion, but their lips don't move. (00:10:30)
Prisoners of the Sun: Part 1 - S3-E5
Continuity mistake: After Snowy tears off the back of the thug's trousers, the two thugs run away. Snowy is shown standing with three oranges behind him, but in the next shot, the three oranges are now on his left and another orange has appeared on his right. (00:14:20)
Prisoners of the Sun: Part 1 - S3-E5
Other mistake: After Tintin unties Haddock, he jumps up, taking off his poncho. He then throws the poncho into the air, but it is never seen again, nor is it ever shown falling onto the ground. (00:18:20)
Chosen answer: It is a pill that makes alcohol taste disgusting.