El fantasma de la mala leche (Perrock Holmes, 16)

Julia and Diego are finally on vacation… but not for long. There's a new case for the Mystery Club detectives, and it's no ordinary investigation: the Pastelito family's mansion is haunted! Here are the FACTS: Every night, a grumpy ghost appears in the mansion, keeping everyone awake with its noises and scares. Here are the CLUES: It's always been said that ghosts don't exist, but this one seems determined to force the family out of the mansion… Who else could be behind this sabotage? There's a whiff of mystery in the air… or is there?