Malcolm Archibald 
The Atlantic Street Murder [EPUB ebook] 

From hunting pickpockets in London omnibuses and ghosts in Hesse Square, Sergeant Watters and Detective Silver are led into the notorious Wild Geese public house, and a tangled mystery that involves the murder of a guardsman and the vivacious wife of an Austrian diplomat.
With the help of the Irish woman Rowena, Watters trawls through the back streets of London, encounters female prize-fighters and suave cracksmen, and finds himself in the savage world of espionage.
But can he unravel the mysterious words: ‘There is a storm from the east and the west’?