The Secret of the Unicorn Rackham's looks and costumes were also inspired by the character, Lerouge, who appears in C. S. Forester's novel, "The Captain from Connecticut", and by the 17th-century French buccaneer Daniel Montbars. The name of Marlinspike Hall— in French—was based upon the name of the real Belgian town, Sart-Moulin. The actual design of the building was based upon the Château de Cheverny, albeit with the two outer wings removed. In introducing Francis Haddock to the story, Hergé made Captain Haddock the only character in the series (except Jolyon Wagg, introduced later) to have a family and an ancestry. "The Secret of the
Tintin in Tibet trace Chang's steps, and finds a cave where Chang has carved his name on a rock. On leaving the cave, he encounters a snowstorm and glimpses what seems to be a human silhouette. Tharkey believes that Tintin saw the Yeti and convinces him to abandon his friend and return with him to Nepal, since the area is too large to search. Tintin spots a scarf on a cliff face, concludes Chang is nearby, and continues with only the Captain. While attempting to scale a cliff face, Haddock slips and hangs out of reach, imperilling Tintin, who is tied to him.