Red Rackham's Treasure (1944) is the 12th adventure of Tintin and a direct sequel to The Secret of the Unicorn. In the previous tale Tintin and Captain Haddock had discovered three parchments revealing the location of the Unicorn, a sunken ship. Said ship contains the treasure of famed pirate Red Rackham. In this adventure, the two friends set out on a naval expedition to locate the treasure. Accompanying them are Thomson and Thompson, determined to protect them from rival treasure hunters.