The Secret of the Unicorn is the eleventh volume of
The Adventures of Tintin, the comics series by Belgian cartoonist
Hergé. The story was serialised daily in , Belgium's leading francophone newspaper, from June 1942 to January 1943 amidst the
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.