My Summer with the Shark

This is the story of Walter and the most incredible summer of his life. School is over and 13-year-old Walter has just lost his father. In his seemingly aimless wandering around the Roman coastline, it is a fascinating and mysterious place that catches his attention: an abandoned villa with a gigantic, murky swimming pool. But the villa is not unguarded and an unforgettable journey is waiting for him. (Source: translated from the official synopsis via DeepL)