An extraordinary turn of events sees Marylebone cab proprietor, Henry Gough, propelled from the familiar streets of Victorian London into the grip of a stirring adventure, full of danger, political intrigue and ruthless treachery in faraway Siam.
When Henry becomes the only witness to the brutal murder of his passenger on one of London-s richest avenues, he is given a clandestine mission to perform. It will end on the banks of Bangkok-s steamy Chao Phraya River, where he uncovers a sinister plot that may bring chaos to Siam.
When Henry draws ever closer to revealing the assassin-s true identity, he is forced to confront powerful forces that threaten his life. As Britain and France-s colonial ambitions clash inside the court of Siamese King Chulalongkorn, the scene is set for a bitter struggle that will decide the fate of Siam itself.