Having read all of the Agatha Christies at least twice, I can honestly say that "Crooked House" is my very favorite. One reason is that Agatha Christie does in this novel what she does best---gathers an extended family all under one roof, allows one of the family to be murdered, and shows quite clearly that all the others had motive and opportunity.
"Crooked House" is an excellent story of a complex family. The patriarch is Aristide Leonides, a Greek who has come to England and made a fortune in the restaurant and catering business. His mansion is home to his two sons, two daughters-in-law, three grandchildren, his first wife's sister, and now to his young and beautiful second wife plus the grandchildren's tutor. When the wealthy old man is poisoned, the reader learns that everyone had not only a motive but also an alibi. The characterizations are wonderful and the characters stand out as some of Mrs. Christie's most memorable ones.
The usual detectives are absent in this one, but the detecting is in the capable hands of Charles Hayward, the son of a Scotland Yard detective and the fiance of Aristide's granddaughter Sophia Leonides. When the blood-chilling ending occurs, one is shocked and yet, on careful reexamination, must admit that all the clues were clearly there.
Curl up with a cup of cocoa (unpoisoned, of course) and enjoy this classic crime with one of Mrs. Christie's most spectacular and unforgettable endings.