The Adventures of Tintin (film) location of Marlinspike Hall, Tintin and Haddock find there some of the treasure and a clue to the "Unicorn"s location. Both men agree on setting up an expedition to find the shipwreck. Spielberg has been an avid fan of "The Adventures of Tintin" comic book series since 1981, when a review compared "Raiders of the Lost Ark" to Tintin. Meanwhile, the comics' creator, Hergé—who didn't like the previous live-action film versions and the animated series—became a fan of Spielberg. Michael Farr, author of "Tintin: The Complete Companion", recalled Hergé "thought Spielberg was the only person who could ever do Tintin
The Secret of the Unicorn Haddock was "the best realised character" in the story, conversely describing the Bird Brothers as "relatively uninspired villains". They went on to state that "The Secret of the Unicorn"-"Red Rackham's Treasure" arc represents "a turning point" for the series as it shifts the reader's attention from Tintin to Haddock, who has become "by far, the most interesting character". They praised the "truly outstanding storytelling" of "The Secret of the Unicorn", ultimately awarding it a rating of four out of five. Phillipe Goddin commented on the scene in the story in which Haddock relates the life of his ancestor, stating that