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N or M?

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N or M First Edition Cover 1941

Dustjacket illustration of the UK First Edition (Book was first published in the US)

N or M? is a work of detective fiction by Agatha Christie first published in the US by Dodd, Mead and Company in 1941 and in the UK by the Collins Crime Club in November of the same year. The U.S. edition retailed $2.00 and the UK edition at seven shillings and sixpence (7/6).

The title is taken from a catechism in the Book of Common Prayer which asks, "What is your Christian name? Answer N. or M."

The novel is the first to feature the mature versions of her detectives Tommy and Tuppence, whose previous appearances had been in the adventure The Secret Adversary (1922) and the short story collection Partners in Crime (1929).

Plot introductionEdit

After the outbreak of the Second World War and many years after they worked for British intelligence, Tommy and Tuppence Beresford feel useless and sidelined. When Tommy is approached to go undercover once more, however, Tuppence decides to join him on his mission whether she is wanted or not.

The duo begin a search for a German agent who may have infiltrated British command. Another British agent that was following these Germans left a cryptic message on his deathbed: "N or M. Song Susie". Grant knew that "Song Susie" stood for Sans Souci, a hotel in Leahampton, and N and M were two German spies, one male and one female. Tommy is to go to Sans Souci to investigate whether N, M or both are at the hotel and to figure out their identities.

Literary significance and receptionEdit

Maurice Willson Disher's review in The Times Literary Supplement of 29 November 1941 began by saying, "To believe that N or M? is not Miss Agatha Christie's best is difficult while the first fine anxious rapture of her latest story is still troubling the mind." He concluded, "The point is reached when you begin to fear for your own sanity on catching yourself wondering whether an ingratiating babe-in-arms might not be Herr Doktor in disguise. Yet such is Miss Christie's skill in conjuring up the ominous that even infant prattle sounds uncommonly like a code for the Fifth Column. In other words, as Mr Robey has said before now, N or M? gets you."

Maurice Richardson in a short review in the 7 December 1941 issue of The Observer wrote: "Agatha Christie takes time off from Poirot and the haute cuisine of crime to write a light war-time spy thriller. N or M is [an] unknown master Fifth Columnist concealed in [the] person of some shabby genteel figure in Bournemouth boarding-house ... Christie's bright young couple, now middle-aged but active as ever, are nearly trapped. Nice surprise finish and all-round entertainment."

A short review by E.R. Punshon in The Guardian of 30 December 1941 ended with: "Mrs. Christie shows herself as ingenious as ever, and one admires especially the way in which the hero snores himself out of captivity." 

Robert Barnard: "The Beresfords contribute their intolerable high spirits to the war effort. Less racist than the earlier thrillers (in fact, some apology is made indirectly) but no more convincing."

References to other worksEdit

In the book there are references to the first Tommy and Tuppence book, The Secret Adversary. For example, in chapter 1 Tuppence remembers how they saved a girl, found the secret document, etc. When Albert appears in the book, he remembers how Tommy and Tuppence first met.

Publication historyEdit

  • 1941, Dodd Mead and Company (New York), 1941, Hardback, 289 pp
  • 1941, Collins Crime Club (London), November 1941, Hardback, 192 pp
  • 1947, Dell Books, Paperback, 191 pp (Dell number 187 mapback),
  • 1959, Pan Books, Paperback, 188 pp (Great Pan G259)
  • 1962, Fontana Books (Imprint of HarperCollins), Paperback, 192 pp
  • 1972, Greenway edition of collected works (William Collins), Hardcover, 224 pp; ISBN 0-00-231567-X
  • 1974, Greenway edition of collected works (Dodd Mead), Hardcover, 224 pp
  • 1984, Ulverscroft Large-print Edition, Hardcover; ISBN 0-7089-1156-0

The novel's true first appearance was in the US in a condensed version in the March 1941 (Volume 76, Number 5) issue of the Redbook magazine with an illustration by Alan Haemer.

The UK serialisation was as an abridged version in seven parts in Woman's Pictorial from 26 April (Volume 41, Number 1059) to 7 June 1941 (Volume 41, Number 1065) under the title of Secret Adventure. All seven installments were illustrated by Clive Uptton.

International titlesEdit

  • Czech: N či M? (N or M?)
  • German: Rotkäppchen und der böse Wolf (Little Red Riding Hood and the Bad Wolf) (since 1960), first edition in 1945: Das Haus der Mrs. Perenna (The Guesthouse of Mrs. Perenna)
  • Portuguese (Brazil): M ou N?
  • Spanish: El misterio de Sans-Souci

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