Agatha Christie's Poirot farewell unveiled at 'dark' crime exhibition
Agatha Christie's 1930s typewriter and the manuscript of her final Hercule Poirot novel, which was kept for decades in a bank vault, went on display last Saturday in a new exhibition delving into the "dark stuff" at the heart of crime fiction.

The cover of the faded and fragile manuscript has the book's title Curtain written in capital letters in Christie's own hand along with her name and address - Greenway House in Devon, southwest England - in spidery longhand.

"She wrote it as a nest egg for her daughter Rosalind, 'something to cheer you up when you come back from the funeral'," said crime novelist Nicola Upson, curator of the Murder By The Book exhibition at Cambridge University Library in central England.

The last Poirot mystery, in which Christie's fabled Belgian detective dies, was written in the early 1940s during World War II in case she did not survive.

At the time "nothing was guaranteed", said Upson. In fact Christie went on to write many more Poirot novels before she died in 1976.

But with the final instalment already written, fears Poirot's demise might be leaked dictated that the manuscript be kept under lock and key.

'Murder by the Book'

"It's Poirot's last case and she wanted that to come out after her own death and for the royalties from it to benefit her daughter," said Upson.

Poirot's fate, when it was finally revealed in 1975, was seen as so culturally significant it was marked by a front page obituary in the New York Times.

A visitor takes a look at early edition books - from the Cambridge University Library collection - at the exhibition 'Murder By The Book.' Photo: AFP

"It ended up being published four months before her own death in January 1976 so when you read Poirot's final words in that book they do read a bit like Christie's farewell to her readers, there's a poignancy to it," added Upson.

Christie, who also wrote the Miss Marple series, is the best-selling fiction author of all time. She sold an astonishing 300 million books during her lifetime.

Nearly half a century after her death, objects such as her clunky 1950s dictaphone and portable 1937 Remington typewriter - on which she would have written one of her most famous works And Then There Were None - still have the power to fascinate.

"There is something so evocative about the first to witness all those thoughts and stories," said Upson, author of the Josephine Tey series of mysteries.

Dark stuff

The exhibition draws on the library's one million-strong fiction collection of first editions - still in their original dust jackets - by highlighting nearly 100 of the most famous, influential and best-selling crime novels in British history.

Wilkie Collins' brass-bound black leather writing desk, mid-19th century, is pictured at the exhibition 'Murder By The Book' at the Cambridge University Library. Photo: AFP

Upson said she wanted to look not just at the "so-called cosy mysteries" but also "the dark stuff, the kind of nuts and bolts of crime fiction which is after all violence and death".

Forgotten classics also feature such as A Pin To See The Peepshow by F. Tennyson Jesse which was inspired by the conviction and 1923 execution of Edith Thompson and Frederick Bywaters.

In Jesse's 1934 novel, protagonist Julia Almond meets a similar fate in an ordeal described as amongst the "most horrific in all crime fiction".

The book was influential in Britain's abolition of the death penalty for murder three decades later in 1969.

As well as early fictional characters such as Miss Marple, Poirot and Arthur Conan Doyle's Sherlock Holmes, the exhibition also features more recent creations such as Lynda La Plante's Jane Tennison and Colin Dexter's Inspector Morse.

And despite changes in style over the decades Upson said the essentials of good crime writing remained the same: "Strong characters ... a really realistic, atmospheric world ... and a strong story with a beginning middle and end, not necessarily in that order."

Murder By The Book at Cambridge University Library runs until Aug 24. - AFP
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'Murder By The Book' exhibition at the Cambridge University Library in England examines crime's place in British literary history