Readers find 'La Leçon du mal' a gripping and intense thriller, with its portrayal of a charming yet monstrous teacher leading to a horrifying climax. While many praise the book's ability to hook and engage, noting its potential for adaptation into film or manga, others struggle with the extensive character list and the complexity of Japanese names. The narrative's pace and the chilling depth of the psychopathic behavior are frequently highlighted, though some readers felt overwhelmed by the book's length and the relentless progression of events.

👍 Engaging narrative with cinematic potential

👎 Complex character names and overwhelming length