The irregular

"London 1909: The British Empire spans the globe, seen as an invulnerable imperial power. But Captain Vernon Kell, head of counter-intelligence at the War Office, knows better. In Russia, there is revolution in the wind; in Germany, an arms race; and in London, the streets are alive with foreign agents provocateur. Kell wants to set up a Secret Service, an agency with a mandate to act domestically and abroad to protect the Empire, but to convince his political masters he needs proof of a threat. To find that proof, he needs an agent he can trust who is smart, ruthless, and able to blend in with the hoi polloi. The playing fields of Eton may produce good army and naval officers, but not men who can work undercover in a munitions factory that appears to be leaking secrets to the Germans. As it happens, the man Kell needs is Wiggins. Trained as a child by Kell's old friend Sherlock Holmes--who organized a gang of urchin investigators known at 221B as the Baker Street Irregulars--Wiggins is a survivor: an ex-soldier with an talent for deduction perhaps second only to the Great Detective, as well as a cunning street fighter. "The best," says Holmes. But Wiggins turns down the job--he "don't do official." But when his best friend, a constable with the London police, is killed by Russian anarchists, Wiggins realizes that accepting the role of secret agent could give him the cover he needs to pursue revenge against his friend's killers. Tracking down the Russian gang responsible for the murder, Wiggins meets a mysterious beauty called Bela, who saves his life and becomes his lover. As he works for Kell, Wiggins begins to unravel a deadly international conspiracy that reaches far beyond the munitions factory"-- "As an urchin living on the streets of London, he spied for Sherlock Holmes; as a man, he spies on the enemies of the British Empire"--