Cigars of the Pharaoh: Part 1 - S1-E6
Revealing mistake: The gunmen fire at the plane in which Tintin takes off, but there are no bullet holes in the plane at all. (00:20:40)
Cigars of the Pharaoh: Part 1 - S1-E6
Revealing mistake: After the plane flies off, the gunmen continue to fire. If you look at the gunman on the bottom left, every time he shoots, a small smoke cloud comes out of the shotgun. The smoke cloud just stays on the edge of the shotgun until he shoots the next time. (00:20:55)
Cigars of the Pharaoh: Part 2 - S1-E7
Revealing mistake: During the search in the forest at morning, Tintin stops walking. He has one foot on the ground and the other foot on a higher ground hill, yet this never seems to affect his leg on the higher ground hill whatsoever. (00:31:10)
Cigars of the Pharaoh: Part 2 - S1-E7
Revealing mistake: The doctor walks away from the cell. Just as he turns to go around the next corridor, you will see instead of turning to the next corridor, he just walks into the wall. (00:33:55)
Cigars of the Pharaoh: Part 2 - S1-E7
Revealing mistake: After Tintin goes into the secret passage and pops his head into a hallway, there is a really bizarre black dot on the screen shown on Tintin's face. (00:38:20)
The Blue Lotus: Part 1 - S1-E8
Revealing mistake: Just after the Chinese man gets shot, he starts sweating. Right as he finishes saying "We need help", part of the sweat sliding down his face just slides onto his tooth and continues down onto his face. (00:02:45)
The Blue Lotus: Part 1 - S1-E8
Revealing mistake: Tintin leaves Mitsuhirato's office with a Chinese guy watching him. Look at his food on the table. Only one side of the bowl has food in it. The other side is empty and magically manages to hold still. (00:05:45)
The Blue Lotus: Part 1 - S1-E8
Revealing mistake: After the car that tried to shoot at Tintin drives off, we can see stuff that was shot at the wall falling to the ground, unnaturally slowly. (00:06:15)
The Blue Lotus: Part 1 - S1-E8
Revealing mistake: In the wide shot of Mitsuhirato's car driving through the woods, no car is visible in shot, just the car's lights. (00:15:55)
The Blue Lotus: Part 1 - S1-E8
Revealing mistake: When Tintin says "Take this" to Mitsuhirato, his skin is green/yellow. (00:19:25)
The Blue Lotus: Part 2 - S1-E9
Revealing mistake: There's a shot where there's tons of people walking beside the train. The people that walk by repeat as the same people 2 times. (00:29:00)
The Blue Lotus: Part 2 - S1-E9
Revealing mistake: In the shot where loads of people walk beside the train, there is a guy with a huge bag. When he walks into the shot, the bag is white for about two frames. Then the bag becomes white as he walks further into shot. (00:29:55)
The Blue Lotus: Part 2 - S1-E9
Revealing mistake: Someone walking besides the stopped train tells Tintin the track was washed out. There is one person with a white/beige package. Part way during the shot, an eighth of the package goes brown for a frame then back to white/beige. (00:29:55)
The Blue Lotus: Part 2 - S1-E9
Revealing mistake: When Tintin says "Mr. Wang is in danger" to Chang, his skin is blue. (00:36:00)
The Black Island: Part 1 - S1-E10
Revealing mistake: Tintin notices the plane. The plane isn't visible though the propeller, just the sky. (00:01:25)
The Black Island: Part 1 - S1-E10
Revealing mistake: The nurse said to Tintin that the bullet only grazed his rib. However, when Tintin was shot, there wasn't any bullet hole around his rib area. (00:01:55 - 00:02:25)
The Black Island: Part 1 - S1-E10
Revealing mistake: When Tintin finds the plane, he says "It's definitely the same plane all right". After this shot, it cuts to Snowy and the camera pans over to Tintin. During the rest of this shot, Tintin's left foot is seen going through part of the wreckage. (00:12:00)
The Black Island: Part 2 - S1-E11
Revealing mistake: Thomson and Thompson commandeer a plane. When the plane exits the screen in the shot where one of them says "Go up, go up", there are some sort of grey smudge marks on the screen that shouldn't be there. (00:31:25)
The Black Island: Part 2 - S1-E11
Revealing mistake: The mechanic the detectives presume to be a pilot says "This is my first flight". Thomson and Thompson turn their heads to each other whilst the mechanic speaks. Note how they have a black color in their eyes, but when they finish turning their heads, the color in the eyes of the detective on the left disappears for three frames, which reappears as soon as they turn their heads to the ground. (00:31:40)
The Calculus Affair: Part 1 - S1-E12
Revealing mistake: The villains stand in front of Marlinspike Hall. The shot after a close-up of their feet shows the clouds along with a storm. Look to the lower left corner and you will see part of the grey cloud doesn't have any color on it, like the animation cell has been scratched. (00:02:50)
Chosen answer: It is a pill that makes alcohol taste disgusting.