Recovering from crippling injuries sustained in his confrontation with Professor Moriarty at the Reichenbach Falls, the celebrated detective, Sherlock Holmes, is wrenched out of his secluded, peaceful and entirely anonymous self-imposed retirement in the country to solve a murder that is literally dropped onto his front porch. He is drawn to a Paris apartment where he is surprised to be joined by detectives Jane Marple and Hercule Poirot who had also each been lured there by equally sinister means. They’d all been summoned to be summarily murdered but, by their collective wiles, they barely escape with their lives.
Their subsequent investigation leads them to discover the existence of an international criminal syndicate calling itself The Five. The syndicate’s far-reaching and decades-long evil scheme is rising to its culmination but then quickly exposed by the collaboration of sleuths but just who is behind it all and how far does their list of suspects extend? To the House of Lords? To Parliament? To the Crown itself?
They look up some old friends and colleagues for help in their investigations, familiar names like Inspector Lestrade, Arthur Hastings, Christopher Wiggins, Sebastian Moran, Felicity Lemon and, of course, Dr. John Watson. The investigation follows interwoven threads that ultimately converge on the truth and the identity of the mastermind behind the criminal enterprise.
Or does it?


