The Adventures of Tintin: "Tintin and the Lake of Sharks": The original comic book of Tintin by Herge, Series 25

In this Tintin story: one night, in Brussels, Belgium, a pair of crooks discreetly break into the aquarium and steal a priceless pearl. As soon as the security guards on duty see the empty shell, they rush away to raise the alarm. The crooks take advantage of the guards' absence by putting a fake pearl, the same size as the real one, in the shell.
When the guards return with the director and the director sees the fake pearl, he thinks the guards were making it up,
but then has second thoughts about the incident as a similar case happened at another museum two weeks before.

Some time later Tintin, Snowy and Captain Haddock arrive in Syldavia, a country in the Balkans. They have come to join their friend professor Cuthbert Calculus who has rented a villa near a lake in order to build his latest invention. At the airport they run into Thompson and Thomson, who are also heading for Calculus on a special mission.
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Tintin Comics characters
Just as Alfred Hitchcock made furtive appearances in his films, Hergé couldn’t resist joining in the adventures of his characters. He discreetly drew himself into the scenery, appearing as a reporter dutifully taking notes when Tintin embarks for the Congo, or interviewing a local in front of the gates to Marlinspike Hall, in hope of gaining the latest on the story of the broken glass in The Calculus Affair. In Hergé’s universe, it’s hard to find a character that has been created from scratch: most were inspired by real people who were either close to the author in some way, historical figures or celebrities at the time.
Tintin character.
Tintin is neither a surname nor a first name, Tintin is created from Hergé's subconscious desire to be perfect, to be a hero. The hero who everyone between 7 and 77 years old wants to be, or become while reading the Adventures of Tintin Comics.
Tintin is created by his father Georges Remi, Hergé, the world renowned Belgian cartoonist. This spiritual heir is more than an adopted child! Hergé has stressed the fact that he raised Tintin, protected him, fed him just like a father would (Numa Sadoul, Tintin et moi, Casterman, p. 66) Over the years and in the course of the Adventures, Tintin surrounds himself with friends who became part his family so to speak.
Among his friends, Snowy comes first. Admittedly he is a dog, but he is above all, the faithful friend of Tintin with a generous spirit. Secondly, Tchang appears in the family circle and becomes a lifelong friend of Tintin and almost a brother. Thirdly, Captain Haddock whose debut was to come a good ten years later is ready to sacrifice his own life for Tintin. Not forgetting all the others, Castafiore, Calculus, Thomson and Thompson who form Tintin's family circle.
Tintin is free, and a very moral person with great integrity. He was considered by the Tibetan monks as a guileless person ( Tintin in Tibet Comics, page 50).
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Captain Haddock is the most popular character in the Tintin family. Haddock has always been a bit naïve and is a man of moods, good and bad, and this is part of his charm.
Haddock is his surname, and his first name, Archibald, is only revealed in the penultimate adventure, Tintin and the Picaros. The haddock is a sea-fish which is popular on both sides of the North Atlantic, and should not be confused with the names, Drydock, Paddock, Padlock or Harrock, some of the names which Haddock is called by Bianca.
Haddock is by nature emotional and irascible, the very opposite of Tintin who is sober & sensible, but he has a heart of gold. Just like Tintin, he is always willing to help people in trouble. A composite mix of roughness and tenderness, he is shown as quick-tempered.
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Snowy is an exceptionally white wire Fox terrier.
In French, Snowy is called Milou.The name came about thanks to a girlfriend of Hergé, Marie-Louise Van Cutsem, who was called "Malou". Snowy was called Morning Snow by the Tibetan monks