Tintin in the Congo and the stowaway is eaten by crocodiles. After reading a letter from the stowaway's pocket, Tintin finds that someone called "A.C." has ordered his elimination. Tintin captures a criminal who tried to rendezvous with the stowaway and learns that "A.C." is the American gangster Al Capone, who is trying to gain control of African diamond production. Tintin and the colonial police arrest the rest of the diamond smuggling gang and Tintin and Snowy return to Belgium. Georges Remi—best known under the pen name Hergé—was employed as editor and illustrator of (""The Little Twentieth""), a children's supplement to (""The Twentieth Century""),
Tintin and the Picaros on the inclusion of the CND peace symbol, Hergé stated that for Tintin, "That's normal. Tintin is a pacifist, he was always anti-war." Hergé also changed the behaviour of several characters in the story, for instance by depicting Tintin practising yoga and Nestor the butler both eavesdropping and drinking Haddock's whisky. Another new development that Hergé added to the story was Haddock's first name, Archibald. Hergé's depiction of the San Theodoran carnival was drawn largely from images of the Nice Carnival. Among the revelers, he included those dressed in the costumes of various different cartoon and film characters, such as