Black coffee. Christie Agatha, Osborne Charles

We present to your attention the book “Black Coffee” by Agatha Christie

to the great detective, Erkul Poiro, the famous physicist Sir Claude Emory, confident that he is in danger. The little Belgian immediately calls his old friend and partner, Captain Gastings, and they hurry to the scientist’s house. However, he does not have time to see Emory Poirot - he is poisoned. At the same time, the formula of an ultra -powerful explosive opened by him disappeared. But the circumstances of the crime were formed so that it was committed in a closed room, and none of those present in it left the house. So, the killer is still here...