Burnt out by the pressures of London life, Dan escapes to a Devonshire village, but he soon discovers an intriguing mystery.

An ancient legend, a coded message carved in stone, and a secret swept beneath the carpet by an upper-class family: all compelling clues.

Dan promises to solve the case, along with his new neighbour and unlikely ally, Alan, but they uncover a hidden history, and there are those who want the past undisturbed.

This challenge could be the tonic Dan needs, but once he begins, there's no going back.