The Secret of the Gatekeepers

Agatha loved the British Museum since childhood. She often visited it with her parents. But she could never imagine that one day a terrible crime would occur there! Intruders attacked one of the museum's employees, taking with them far from the most valuable item in the collection. The police are at a loss: what motivated the intruders and why didn't they steal more valuable exhibits? Agatha has no doubt, it's time for a new investigation! Where will her detective work lead her this time?