Tintin (character) making it in his role of explorer. Clearly unencumbered with financial preoccupations, after "Red Rackham's Treasure" he is ensconced as a permanent house guest in the stately Marlinspike Hall with retired mariner Captain Haddock and the scientist Professor Calculus. Tintin occupies all of his time with his friends, exploring the bottom of the sea, the tops of the mountains, and the surface of the Moon (sixteen years before astronaut Neil Armstrong). Through it all, Tintin finds himself cast in the role of international social crusader, sticking up for the underdog and looking after those less fortunate than himself. From the
Tintin and the Lake of Sharks his every move), and the Captain and the detectives play a game of golf, Snowy runs into a frogman who has obtained from Madame Black some plans stolen from Calculus' laboratory. The frogman escapes by jumping into the lake, but Snowy manages to bite off a part of one of his flippers. After the Captain and the detectives tell Tintin what has happened, he gives the dogs the bitten-off flipper to sniff. While Gustav leads Haddock to a pile of abandoned tires, Tintin follows Snowy to a buried chain which, when pulled, opens a passage to a hidden cave where