Captain Haddock home, Marlinspike Hall (or "Moulinsart" in the original French). Harry Thompson, author of "Tintin: Hergé and his creation", writes that the introduction of this large and luxurious country house was "to provide a suitable ancestral home for Tintin and himself to move into." To achieve this in terms of the plot, Hergé also details Haddock's ancestry, something Thompson regards as distinctive: "Haddock is the only regular character whose relatives turn up in the Tintin stories at all (if one discounts Jolyon Wagg and his dreadful family)." As Haddock's role grew, Hergé expanded his character, basing him upon aspects of friends,
Hergé's Adventures of Tintin while he was absent in the original book. Professor Calculus makes a cameo. Puschov accuses Tintin of robbing him, but in an airport. Tintin and Haddock hide in post office bags to get to Sussex, but Haddock gets in the wrong bag, and they are separated. Tintin later finds Haddock in England examining the plane. Dr. Müller is older and white-haired, and has a goatee. Ranko doesn't break his arm in this version, and even aids Tintin, Haddock and Snowy. This is the only story in the entire series that also exists in a black-and-white form, in animation mode. In