Agatha Christie's Black Coffee

A case that only Hercule Poirot can unravel...An accomplished physicist is left with a bitter taste in his mouth when a secret document of national importance is stolen from his very home. Seeking a swift remedy, he locks the doors and switches off the lights to allow the thief to replace it, no questions asked. But the darkness brings death, a chest full of poisons, a tangle of family feuds, old flames and a house full of suspicious guests.