Le secret de la ligne claire

Le Secret de la ligne claire, originally titled The Secrets of the Clear Line, is a 2003 French animated film directed by Luc Besson and written by Jean Van Hamme. The film is based on the graphic novel series of the same name by Edgar P. Jacobs. The story follows Tintin, a young reporter, as he is investigates the mysterious death of Professor Labrousse, the creator of the Thompson twins, who in the story are popular crime fighting characters.