The Secret of the Unicorn (French: Le Secret de La Licorne) is the eleventh volume of The Adventures of Tintin, the comics series by Belgian cartoonist Hergé. The story was serialised daily in Le Soir, Belgium’s leading francophone newspaper, from June 1942 to January 1943 amidst the Nazi German occupation of Belgium during World War II. The story revolves around young reporter Tintin, his dog Snowy, and his friend Captain Haddock, who discover a riddle left by Haddock’s ancestor, the 17th century Sir Francis Haddock, which could lead them to the hidden treasure of the pirate Red Rackham. To unravel the riddle, Tintin and Haddock must obtain three identical models of Sir Francis’s ship, the Unicorn, but they discover that criminals are also after these model ships and are willing to kill in order to obtain them.

The Secret of the Unicorn was a commercial success and was published in book form by Casterman shortly after its conclusion. Hergé concluded the arc begun in this story with Red Rackham’s Treasure, while the series itself became a defining part of the Franco-Belgian comics tradition. The Secret of the Unicorn remained Hergé’s favourite of his own works until creating Tintin in Tibet (1960). The story was adapted for the 1957 Belvision animated series Hergé’s Adventures of Tintin, the 1991 Ellipse/Nelvana animated series The Adventures of Tintin, the 1992-3 BBC Radio 5 dramatisation of the Adventures, the feature film The Adventures of Tintin: The Secret of the Unicorn (2011) directed by Steven Spielberg, and the film’s tie-in video game.
While browsing on the Brussels Voddenmarkt/Marché aux puces at the Vossenplein in the Marollen, Tintin purchases an antique model ship which he intends to give to his friend, Captain Haddock. Two strangers, model ship collector Ivan Ivanovitch Sakharine and antique-scout Barnaby, independently try to persuade Tintin to sell the model to them. He also sees detectives Thomson and Thompson on the look-out for a pickpocket. At Tintin’s flat, Snowy accidentally knocks the model over and breaks its mainmast. Having repaired it, and shown the ship to Haddock, Tintin discovers that the ship is named the Unicorn, after a ship commanded by Haddock’s ancestor. While Tintin is out, the ship is stolen from his apartment; in the investigation, he discovers that Sakharine owns an identical model, also named the Unicorn. At home, Tintin discovers a miniature scroll, and realises that this must have been hidden in the mast of the model which Snowy had broken. Written on the parchment is a riddle: “Three brothers joined. Three Unicorns in company sailing in the noonday sunne will speak. For ’tis from the light that light will dawn, and then shines forth the Eagle’s cross”.

Upon hearing of the riddle, Captain Haddock explains that the Unicorn was a 17th-century warship captained by his ancestor, Sir Francis Haddock, but seized by a pirate band led by Red Rackham. Alone of his crew to survive the capture, Sir Francis killed Rackham in single combat and scuttled the Unicorn; but later built three models, which he left to his sons. Meanwhile, Barnaby requests a meeting with Tintin, but is gunned down on Tintin’s doorstep before he can speak, and points to sparrows as a cryptic clue to the identity of his assailant before falling unconscious. Later, Tintin is kidnapped by the perpetrators of the shooting: the Bird brothers, two unscrupulous antique dealers who own the third model of the Unicorn. They are behind the theft of Tintin’s model and have also stolen Sakharine’s parchment, knowing that only by possessing all three parchments can the location of Red Rackham’s treasure be found. Tintin escapes from the cellars of the Bird brothers’ country estate, Marlinspike Hall, while the Captain arrives with Thomson and Thompson to arrest them. It is revealed that the Bird Brothers have only one of the parchments, as two were lost when their wallet was stolen. It is also revealed that Barnaby survived and has made a full recovery, much to Max Bird’s enragement. The Bird brothers are arrested. Tintin and Thomson and Thompson track down the pickpocket, Aristides Silk, a kleptomaniac who has a penchant for collecting wallets, and obtain the Bird Brothers’ wallet, containing the missing two parchments. By combining the three parchments and holding them to light, Tintin and Haddock discover the coordinates (20°37’42.0″ N 70°52’15.0″ W, 82 km north of the Dominican Republic) of the lost treasure and plan an expedition to find it. #080322