The Mysterious Affair at Styles

The debut novel by Agatha Christie and at the same time the first one in which the character of her most beloved detective, Hercule Poirot, appears.
The atmosphere of an old English estate, family quarrels and scandals, a burnt will, and many false leads. Which of the residents had a motive to poison the owner of Styles Court residence? Was the crime committed out of passion or greed?
For the first time, Captain Hastings, who dreams of being Sherlock Holmes, and Hercule Poirot, who doesn't need to dream about it, work together to unravel the mystery.