Title: Schmetterball
Description: Lennart, a table tennis champion and one of the five best athletes in his German school, finds his title defense put at risk by a series of mishaps and an attempt at blackmail, and he and his friends investigate.
Subjects: Friendship, Juvenile fiction, Child athletes, Child detectives, Criminal investigation, International schools, Table tennis players, Spanish language materials, Amitié, Romans, nouvelles, etc. pour la jeunesse, Enquêtes criminelles, Écoles internationales, Joueurs de tennis de table