Lal Bombeter Guptadhan by Hergé [Paperback]

Tintin, Kuttus, and Captain Haddock set out to find the long-lost treasure of Red Rackham. Based on a clue from the ship The Unicorn, they now have a valuable lead to the possible location of the treasure. However, this search is far from easy, especially with Detective Johnson and Thompson, and Professor Calculus in the team. On a deserted island, they make strange discoveries and embark on a dangerous underwater adventure. And the adventure ends with an unexpected conclusion.