The list of books by Agatha Christie is quite impressive as you can see here. To choose only five seems an impossible task if one has not read them all. You can find here and here some of the suggestions that Moira collected at her excellent blog Clothes In Books. From my side I didn’t dare to choose five favourites. But instead I have decided to name the five titles I look forward to reading shortly. In no particular order:
Peril at End House (1932)
On holiday on the Cornish Riviera, Hercule Poirot is alarmed to hear pretty Nick Buckley describe her recent “accidental brushes with death.” First, on a treacherous Cornish hillside, the brakes on her car failed. Then, on a coastal path, a falling boulder missed her by inches. Later, an oil painting fell and almost crushed her in bed.
So when Poirot finds a bullet hole in Nick’s sun hat, he decides that this girl needs his help. Can he find the would-be killer before he hits his target?
Five Little Pigs aka Murder in Retrospect (1942)
Beautiful Caroline Crale was convicted of poisoning her husband, but just like the nursery rhyme, there were five other “little pigs” who could have done it:Philip Blake (the stockbroker), who went to market; Meredith Blake (the amateur herbalist), who stayed at home; Elsa Greer (the three-time divorcée), who had her roast beef; Cecilia Williams (the devoted governess), who had none; and Angela Warren (the disfigured sister), who cried all the way home.
Sixteen years later, Caroline’s daughter is determined to prove her mother’s innocence, and Poirot just can’t get that nursery rhyme out of his mind.
Crooked House (1949)
The Leonides are one big happy family living in a sprawling, ramshackle mansion. That is until the head of the household, Aristide, is murdered with a fatal barbiturate injection.
Suspicion naturally falls on the old man’s young widow, fifty years his junior. But the murderer has reckoned without the tenacity of Charles Hayward, fiancé of the late millionaire’s granddaughter.
Sad Cypress (1940)
Beautiful young Elinor Carlisle stood serenely in the dock, accused of the murder of Mary Gerrard, her rival in love. The evidence was damning: only Elinor had the motive, the opportunity, and the means to administer the fatal poison.
Yet, inside the hostile courtroom, only one man still presumed Elinor was innocent until proven guilty. Hercule Poirot was all that stood between Elinor and the gallows.…
Endless Night (1967)
Some are born to sweet delight, Some are born to endless night . . .
When penniless Michael Rogers discovers the beautiful house at Gypsy’s Acre and then meets the heiress Ellie, it seems that all his dreams have come true at once. But he ignores an old woman’s warning of an ancient curse, and evil begins to stir in paradise. As Michael soon learns: Gypsy’s Acre is the place where fatal “accidents” happen.
Michael Rogers dreams of rich, beautiful wife and perfectly designed house. But after finding the woman and building the house, sudden death strikes.
I have not included two of my favourites I have recently read, The Murder of Roger Ackroyd and And Then There Were None. Click at the book title to see my review. And I’m less interested in Murder on the Orient Express and Death on the Nile for the simple reason that I have seen them countless of times on the small screen.
See also Martin Edwards’ Top Agatha Christies here
Any other suggestion you may have is welcome
Opening line: It was about eleven o’clock in the morning, mid October, with the sun not shining and a look of hard wet rain in the clearness of the foothills. I was wearing my powder-blue suit, with dark blue shirt, tie and display handkerchief, black brogues, black wool socks with dark blue clocks on them. I was neat, clean, shaved, and sober, and I didn’t care who knew it. I was everything the well-dressed private detective ought to be. I was calling on four million dollars. 
A Crime is Afoot 