Baroness Emmuska Orczy 
Man in Grey Being Episodes of the Chovan Conspiracies in Normandy during the First Empire 

The Man in Grey by Baroness Orczy, author of The Scarlet Pimpernel, was first published in 1918. This time Orczy sets the action in post-revolutionary France. The book takes the form of a novel but is divided up into nine inter-connected short stories about the mysterious Man in Grey’s adventures in tracking down Royalist criminals for the Government.