During a search for a missing person, Tommy and Tuppence find themselves in a race to thwart a malevolent plot to paralyze Great Britain through closely manipulated labor unrest.

"Framed in the doorway of Hercule Poirot's bedroom stands an uninvited guest, coated from head to foot in dust. The man stares for a moment, then he sways and falls. Who is he? Is he suffering from shock or just exhaustion? Above all, what is the significance of the figure 4, scribbled over and over again on a sheet of paper? Poirot finds himself plunged into a world of international intrigue, risking his life--and that of his 'twin brother'--to uncover...

Hercule Poirot rushes to France in response to an urgent and cryptic plea from a client. But the Belgian detective arrives just too late: the man who had summoned him is found dead on a golf course, stabbed in the back with a letter opener and wearing an ill-fitting coat with a mysterious love letter in its pocket. Strange circumstances multiply, culminating in the discovery of a second body stabbed with the same murder weapon. While the local authorities...

Days after the encounter at the Swiss waterfall that claimed the lives of Sherlock Holmes and criminal mastermind Professor Moriarty, Pinkerton detective agent Frederick Chase and Scotland Yard Inspector Athelney Jones, a devoted student of Holmes's methods of investigation and deduction, must track down a sinister figure who is determined to stake his claim as Moriarty's successor.

Probably the most infamous story in the Sherlock Holmes canon is "The Final Problem" as it relates the facts of the death/murder of the master detective at Reichenbach Falls. On May 4, 1891, the detective met his archenemy Professor Moriarty on a ledge above the falls; the two became locked in a titanic hand-to-hand struggle before both tumbled over the precipice, presumably to their deaths, as witnessed afar by Dr.Watson. The outcry against the death...