The Adventures of Tintin: The Secret of the Unicorn (video game) wants to get the third scroll, and that he is in fact Allan's boss. After a fight with Allan, Tintin gets the third scroll and heads off to Brittany, where he and Haddock earlier identified as Sir Francis' hideout. Learning that the scrolls contain the coordinates of the treasure of Red Rackham, Tintin and Haddock plan to head there, but Haddock is kidnapped by Allan, who uses him as a hostage to get the scrolls. After rescuing Haddock, Tintin discovers that the treasure is hidden within Marlinspike Hall. There they find the treasure and Thomson and Thompson arrest Allan and
Captain Haddock Captain Haddock as a permanent addition to the cast. Hergé introduced Captain Haddock in "The Crab with the Golden Claws" as the rum-loving captain of the "Karaboudjan", a merchant vessel used— without Haddock's knowledge— by his first mate Allan for smuggling drugs inside crab tins. Because of his alcoholism and temperamental nature, his character was weak and unstable, at times posing as great a hazard to Tintin as the villains of the piece. He was also short-tempered, given to emotional expletive-ridden outbursts, and capable of infuriating behaviour; at one point he even attacks Tintin when, while traversing the Moroccan desert,