Red Rackham's Treasure

In The Secret of the Unicorn (1943), and its sequel, Red Rackham’s Treasure (1944), Tintin joins Haddock on the trail of Sir Francis Haddock, the Captain’s distinguished ancestor. Newcomer Cuthbert Calculus, an inventor, will help locate the treasure and will ultimately contribute the necessary funds which enable Captain Haddock to acquire his family’s ancestral home, Marlinspike Hall. Tintin, Haddock and the Thom(p)sons, embark on their search for Red Rackham’s treasure, with the parchments left by Captain Haddock’s illustrious ancestor in their hands. This is a rough adventure full of surprises, not to mention the presence of Professor Calculus and his new underwater exploration invention.