A gripping mini-mystery from the bestselling author of Murder Most Unladylike. I the Honourable Daisy Wells have decided to give an account of another mystery the Detective Society has faced in recent weeks. It was very exciting and very heroic and I was very brilliant and brave... A daring thief has been robbing Londons most famous museums. . . When Daisys birthday treasure hunt leads them into the path of the culprit Daisy and Hazel realise where theyll strike next - the British Museum! With help from their friends (and rivals) the Junior Pinkertons the girls must crack codes unravel clues and race against time to solve the mystery.