In Search of the Templar Treasure

Marco is dissatisfied: he was supposed to be searching for treasure with his friends using a map found in a bottle, but instead he will spend his summer vacation with his annoying younger brother and his mother's friend's daughter. However, Marco does not yet suspect that this summer he will become a real detective, solve the case of the mysterious disappearance of two people, and, perhaps, still find his treasure. But that is not certain.

For middle school age children.