12 secret service stories packed in 1 book. The main character Monsiour V was engaged to solve various mission by multi sovereign.

1. THE TELEGRAM WHICH BEGAN THE BOER WAR
2. THE BLOWING UP OF THE 'MAINE'
3. THE MYSTERY OF CAPTAIN DREYFUS
4. WHAT WAS BEHIND THE TSAR's PEACE TRANSCRIPT
5. WHO REALLY KILLED KING HUMBERT
6. THE PERIL OF NORWAY
7. THE RUSE OF THE DOWAGER EMPRESS
8. THE ABDICATION OF FRANCIS-JOSEPH
9. THE DEATH OF QUEEN DRAGA
10. THE POLICY OF EDWARD VII
11. THE HUMBERT MILLIONS
12. THE BLACK POPE