The owner of the house was found dead in his room. All doors and windows in the room are tightly closed, and a weapon lies next to the body. Suicide? Probably, all household members and government officials would have thought so, but by chance, Hercule Poirot was invited to a dinner party in the house where this misfortune happened. He will have to unravel the mystery of the locked room... This book includes eight stories by Agatha Christie. In some of them, the reader will meet the favorite detectives of the detective queen - Hercule Poirot, Parker Pine and Harley Keene. Two more stories are completely independent; they clearly demonstrate how a complex detective story can be developed in such a small amount of text. The publishing layout is preserved in PDF A4 format.