The Red Sea Sharks: Part 1 - S3-E1
Plot hole: When Tintin is listening in on Dawson's conversation, he realises an alarm clock had been planted in his coat pocket as a prank by Abdullah. Even if he didn't see the clock in his pocket beforehand, there is no reason why he wouldn't have felt the added weight the clock would have had on the coat. (00:09:35)
Chosen answer: If Hector was seriously intent on removing King Ottokar's scepter from the glass cage holding it and launching it through the window with the camera, then Hector would have been forced to knock out the two guards so they would not have interfered with Hector's plan as soon as he removed the scepter from the glass. As for Hector, himself, was explained when Tintin was explaining how Hector stole the scepter. Tintin placed a twig inside the camera and it launched out of the camera. Hector would have placed the scepter inside of the camera, and would have been knocked unconscious due to the spring effect created when the scepter had been launched.
Casual Person