Auzou Book for anatole bristol investigations ghost, lies and rice pudding

You're in Mr. Caron's CM2 class and Anatole Bristol, the famous school investigator, is your friend. When the teacher announces to you and the autres pupils that he's going to organize a night at school, you can't believe it. There are rumors of a ghost wandering the corridors at night... And you've noticed a string of mysterious disappearances around the school as night approaches. It's time to get to the bottom of it, and it's up to you to lead the investigation with Anatole and his assistant Philo!