| Auteur | Carr, Caleb |
| ISBN | 9780751537475 |
| Uitgeverij | Little, Brown Book Group Ltd. |
Mycroft Holmes charged with ensuring the personal safety of Queen Victoria. He calls on his brother Sherlock Holmes for help when a number of attempts have been made on her life and when two unexplained deaths occur amongst the staff at her Scottish residencies. Can Holmes's extraordinary deductive powers solve them?
