- UK
- Collins, London, Nov. 1941
- Woman's Pictorial, Apr.26-Jun.7 1941 as 'Secret Adventure'
- US
- Dodd, Mead & Co., New York, 1941
- Redbook Magazine, March 1941
Plot
It is World War II, and while the RAF struggles to keep the Luftwaffe at bay, Britain faces an even more sinister threat from 'the enemy within' - Nazis posing as ordinary citizens.
With pressure mounting, the Intelligence service appoints two unlikely spies, Tommy and Tuppence Beresford. Their mission: to seek out a man and a woman from among the colourful guests at Sans Souci, a seaside hotel. But this assignment is not to stroll along the promenade. After all, N and M have just murdered Britain's finest agent...
Characters
Tuppence Beresford • Tommy Beresford • Albert Batt • Dr. Binion • Major Bletchley • Alfred Cayley • Elisabeth Cayley • Lord Esterfield • Mr. Grant • Commander Haydock • Anthony Marsdon • Sophia Minton • Mrs. O'Rourke • Eileen Perenna • Shelia Perenna • Vanda Polonska • Betty Sprot • Millicent Sprot • Carl von Deinim
Films & TV
- N or M?, UK, 2015
- TV drama list
UK/US covers
Dodd, Mead and Company
- Dodd, Mead & Co., 1941; Hardcover; ♦Katsurou Hayashi
- Dodd, Mead & Co., 1974; Greenway edition; Hardcover
Collins / Fontana Books / HarperCollins
- Collins Crime Club, 1941; Hardcover; ♦Bevis Benneworth
- White Circle, 1949; ♦Lauralee(ManorBooks)
- White Circle, Services edition
- White Circle, Indian Services edition
- Collins, 1951; the Crime Club
- Fontana Books, 1962
- Fontana Books, 1964; ca: Tom Adams*
- Fontana Books, 1969; ca: Tom Adams*
- William Collins, 1972; Greenway edition; Hardcover; ISBN:9780002315678
- Fontana Books (4415), 1976; ISBN:9780006144151; ca: Tom Adams*
- Fontana Books, 1985 20th; ISBN:9780006163015
- Fontana Books, 1990; ISBN:9780006163015
- HarperCollins, 1995; ISBN:9780006163015
- HarperCollins, 1999; Hardcover; ISBN:9780002315678
- HarperCollins, 2001
- HarperCollins, 2008; Masterpiece edition
- HarperCollins, 2010; Facsimile edition/Hardcover; ISBN:9780007354627
- William Morrow Paperbacks, 2012; ISBN:9780062074324
- Collins, 2012; ELT Reader; ISBN:9780007451623
- Center Point Pub, 2013; Library Binding/Hardcover; ISBN:9781611736113
- HarperCollins, 2015; ISBN:9780008125936
- HarperCollins, 2015; ISBN:9780007590612
- William Morrow Paperbacks, 2016; ISBN:9780062449931
- HarperCollins, 2018
- HarperFiction, 2018; ISBN:9780008256203
Dell Books
- Dell Books (187), 1947; with mapback; ca: Gerald Gregg
- Dell Books (6254), 1964; ca: William Teason
- Dell Books (6254), 1968; ca: William Teason
- Dell Books (6254), 1974
- Dell Books (6254), 1976
- Dell Books, 1979; ♦Sheldon Goldberg
- Dell Books (6254), 1981; ISBN:9780440162544
- Dell Books, 1981
Pan Books
- Pan Books (G259), 1959; ca: Glenn Steward; ♦Lauralee(ManorBooks)
- Pan Books (G259), 1961; ca: Sam Peffer; ♦Lauralee(ManorBooks)
- Pan Books; ISBN:9780330295987
- Pan Books, 1973; ISBN:9780330233279; ♦Sheldon Goldberg
Berkley Books
- Berkley Books, 1984; ISBN:9780425067963
- Berkley Books
- Berkley Books, 1986; ISBN:9780425098455
- Berkley Books, 1996; ISBN:9780425098455
other publishers
- G.P. Putnam's Sons, 1987; Winterbrook edition; Hardcover; ISBN:9780396091639
- Signet, 2000; ISBN:9780451201133
- Jonathan Press(#J13), 1941
- Ulverscroft Large Print Books, 1984; Hardcover; ISBN:9780708911563
- Planet Three Publishing, 2003
Western Europe covers
N ou M ?
Le Masque (#353) 1948
- Le Masque, 1960
- Le Masque, 1983
- Le Masque, 1991
- Le Masque
- Masque Christie, 2011; ISBN:9782702425534
- Masque Christie, 2019; ISBN:9782702449325
Club des Masques (#32) 1967
- Club des Masques, 1967; ca: Tom Adams*
- Club des Masques, 1983; ISBN:9782702413913
- Club des Masques, 1984
Le Livre de Poche (#5764) 1983
- Le Livre de Poche, 1983
- Le Livre de Poche, 1988
- Le Livre de Poche, 2003
- Le Livre de Poche
- Le Livre de Poche; ISBN:9782253031925
- Le Livre de Poche; ISBN:9782253031925
other publishers
- Hachette, 2004; Collection Agatha Christie (20); ISBN:9782846343886
- Edito-Service S.A., 1972
N of M
- Sijthoff, 1950
- Sijthoff, 1958
- Sijthoff, 1961
- Sijthoff, 1974; ♦Eric Gellaerts
- Sijthoff, 1974
- Sijthoff, 1975
- Sijthoff, 1983
- Sijthoff, 1987; ISBN:9789021837819
- Luitingh-Sijthoff, 1993; Poema; ISBN:9789024513123
Dutch Media Group, 2015; Het Laaste Nievus
- Overamstel Uitgevers, 2015; ISBN:9789048823352
Rotkäppchen und der böse Wolf // Das Haus der Mrs. Perenna / N oder M?
- Das Haus der Mrs. Perenna; Scherz, 1945
- Scherz, 1960
- Scherz(#140), 1962
- Scherz(#140), 1968
- Scherz(#443), 1974
- Scherz(#443), 1981
- Scherz(#443), 1983; ISBN:9783502504436
- Bertelsmann, 1985
- Scherz, 1990
- Loewe, 1992; ISBN:9783785524510
- Scherz, 1994; ISBN:9783502504436
- Weltbild, 1995
- Scherz, 1996
- Scherz, 2003
- Scherz, 2003
- Fischer, 2006; ISBN:9783596168941
- Weltbild, 2006
- Hachette, 2010
- N oder M?; Atlantik, 2019; ISBN:9783455004830
Northern Europe covers
N eller M
- Bonniers, 1942; Bonniers detektivromaner; ca: Mark Sylwan
- Bonniers, 1967; Zebra Special (19); ca: Tom Adams*
- Bonniers, 1970; Delfinserien (290); ca: Per Åhlin
- Bonniers, 1983; Stora Romanklubben; ISBN:9789100484040; ca: Magnus Andersson
- Bonniers, 1990; Bokia; ISBN:9789100550363; ca: Jan Sjöberg & Anders Backman
- Bonniers, 1997; Bonnierpocket; ISBN:9789100564483; ca: Leslie Quagraine
N eller M?
- Carit Andersens, 1964
- Forum, 1971
- Rosenkilde, 2017; ISBN:9788711746981
- Lindhardt og Ringhof (e-bog), 2021; ISBN:9788711746981
N eller M?
- Aschehoug, 1975
- Aschehoug, 1990; ISBN:9788203163043
Salomonin tuomio
- WSOY, 1988; ISBN:9789510149683
- WSOY, 2015; ISBN:9789510413302
V või W
- Elmatar, 2001; Öölane; ISBN:9789985935460
N ar M?
- Sirokas, 1998
Southern Europe covers
Quinta colonna
- Mondadori, 1961; I Capolavori dei Gialli(#164)
- Mondadori, 1987; ISBN:9788804226192
- Mondadori, 1994; I Classici del Giallo(710); ISBN:978-8804410928; ca: Carlo Jacono
- Mondadori, 1995; Oscar scrittori moderni; ISBN:9788804410928
- Mondadori, 2003; Oscar scrittori moderni; ISBN:9788804519256
- Hachette Fascicoli, 2005
- Mondadori, 2013; ISBN:9788852033049
- Mondadori, 2022; Oscar moderni; ISBN:9788804766766
El misterio de "Sans-Souci"
- Biblioteca Oro(#369), 1958; ♦Pablo Ramirez Jr.
- Biblioteca Oro(#369), 1965; ca: William Teason
- Biblioteca Oro(#281), 1975; ISBN:9788427202818
- Molino, 1997; ISBN:9788427285385
- Planeta, 2001; ISBN:9788477511496
- Molino, 2004; ISBN:9788427298255
- RBA, 2008; ISBN:9788447357918
- RBA (EPUB, 2013)
- Planeta, 2013; ISBN:9789504931454
M ou N? // Tempo de Espionagem / N ou M?
- Tempo de Espionagem; Livros do Brasil, 1960; Colecção Vampiro(#161)
- Nova Fronteira, 1984
- Nova Fronteira, 1988
- Record, 1988; ISBN:9788511516623
- Record, 1988; ISBN:9788501155559
- L&PM Pocket, 2011; ISBN:9788525422583
- N ou M?; ASA(#79), 2014; ISBN:9789892327389
- HarperCollins Brasil, 2016; ISBN:9788569809401
- Globo Livros, 2019; ISBN:9786580634118
- HarperCollins Brasil, 2021; ISBN:9786555111743
Το κυνήγι των κατασκόπων / Ν ή Μ / Η μάχη των κατασκόπων
Το κυνήγι των κατασκόπων
- Λυχνάρι(A178)
- Λυχνάρι(A178)
- Λυχνάρι(A178), 2010; ISBN:9789605170738; ca: Tom Adams*
Ν ή Μ
- Ψυχογιός, 2019; ISBN:9786180131079
Η μάχη των κατασκόπων
- 1967
N ili M?
- BIGZ (Beograd), 1991; ♦Svetlana Andjelic
- Mladinska knjiga, 2015; ISBN:9788679284143
- BDR Media; ISBN:9788660121501
N ili M
- V.D.T. (Zagreb), 2005; ISBN:9789536838196
N ili M?
- Svjetlost (Sarajevo), 1967; ♦Svetlana Andjelic
Eastern Europe covers
N či M?
- Naše vojsko, 1967; ♦Czibóka Tamas
- Knižní klub, 2013; ISBN:9788024242736
N vagy M?
- Magvető Kiadó, 1975; Albatrosz Könyvek; ISBN:9789632700199; ♦Czibóka Tamas
- Magyar Könyvklub/Európa Kiadó, 1997; Képkeretes-Sorozat; ISBN:9789635485505; ♦Czibóka Tamas
- Aquila Kiadó, 2007; Aquila Könyvek; ISBN:9789636795627; ♦Horváth Tamás
- Európa Kiadó, 2013; Agatha Christie 125-Sorozat; ISBN:9789630795548
- Helikon Kiadó, 2021; ISBN:9789634796152
Произшествие в Сан Суси // Н или М?
- Списание „Антени“, 1990
- Н или М?; Благо, 1992
- Ера(#57), 2014; ISBN:9789543893232
N czy M?
- Wydawnictwo Iskry, 1956
- Wydawnictwo Iskry, 1992; ISBN:9788320713671
- Prószyński i S-ka, 1998; Biblioteczka Konesera; ISBN:9788373371149
- Hachette Polska, 2002; Kolekcja Hachette: Agatha Christie(27); ISBN:9788371480072
- Prószyński i S-ka, 2004; ISBN:9788373376779
- Wydawnictwo Dolnośląskie, 2005; Agata Christie - Królowa Kryminału; ISBN:9788373841888
- Wydawnictwo Dolnośląskie, 2010; Agata Christie - Królowa Kryminału; ISBN:9788324589388
- Wydawnictwo Dolnośląskie, 2015; Klasyka Kryminału; ISBN:9788327150899
- Wydawnictwo Dolnośląskie, 2017; Agatha Christie Kolekcja Kryminałów(76); ISBN:9788327154972
N sau M?
- Abeona, 1993
- Multi Press, 1999; ISBN:9789739086301
- Litera, 2017; ISBN:9786063317828
- Litera, 2021; Agatha Christie Colectie; ISBN:9786063374043
Икс или игрек? / Н или М?
Икс или игрек?
- Эксмо, 2011; Вся Кристи; ISBN:9785699298723
- Эксмо, 2012; Детективный клуб Агаты Кристи; ISBN:9785699563388
- Эксмо, 2016; Агата Кристи. Серебряная коллекция; ISBN:9785699880119
- Hachette, 2016; Коллекция Агата Кристи
- Эксмо, 2019; Агата Кристи. Любимая коллекция; ISBN:9785041050955
Н или М?
- АСТ, 2002
- АСТ, 2003
- Центрполиграф, 2003
N or M ?
- Менеджер, 2004
- Каро, 2009; ISBN:9785992504132
Middle East & Asian covers
ნ თუ მ ?
- პალიტრა L, 2019; ISBN:9789941298189
- პალიტრა L, 2022; ISBN:9789941352287
N veya M? // M. or. N. / Ölüm Pusudaydı / M. mi N. mi
- N veya M; Sinan, 1949
- M. or. N.; Ak Kitabevi, 1963
- M. mi N. mi; Ak Kitabevi,
- Ölüm Pusudaydı; Altın Kitaplar, 1981
- Altın Kitaplar, 2008; ISBN:9789752109612
- Altın Kitaplar; ISBN:9789752109612
גייס חמישי / גיס חמישי
- תשבץ סכנה
*
- גייס חמישי
- גייס חמישי
ידי מזרחי
1960
ن أو م؟ / الطابور الخامس / العميل السري
ن أو م؟
- JARIR Reader, 2014
ISBN:6281072078539
الطابور الخامس
- دار النجمة
- دار النجمة
العميل السري
- دار ميوزيك
2000; ISBN:9789953381152
- المكتبة الثقافية
1993
اِن یا اِم؟ / قتل يك جاسوس
اِن یا اِم؟
- Hermes books, A.P.1393
ISBN:9789643637064
- Hermes books, A.P.1390
ISBN:9789643637064
ca: William Teason
- شرکت سهامی کتابهای جیبی
A.P.1345
قتل يك جاسوس
- موسسه فرهنگی سماء
A.P.1375
গুপ্তচর ও সিরিয়াল কিলার / গুপ্তচর
- গুপ্তচর ও সিরিয়াল কিলার; সেবা প্রকাশনী, 2018; ISBN:9789841633059
- গুপ্তচর
N atau M?
- ?, 1977
- Gramedia, 1990; ISBN:9789795110781
- Gramedia, ; ISBN:9789795110781
- Gramedia, 2008; ISBN:9789792235074
- Gramedia, 2017; ISBN:9789792235074
ล่าสายลับมือสังหาร / ฉีกหน้ากาก เอ็น กับ เอ็ม
ล่าสายลับมือสังหาร
- ซีเอ็ดยูเคชั่น; ISBN:9786160833009
ฉีกหน้ากาก เอ็น กับ เอ็ม
- ♦Rattanachai Lueangwongngam
- สร้างสรรค์บุ๊คส์, 2007(2550); ISBN:9789743414282; ca: Tom Adams*; ♦Ratakorn
Người Đàn Bà Hoang Dã
- Công an Nhân dân, 2004
逍遙賓館之謎 / 諜海 / 谍海 / 桑苏西来客 / 密碼 / 密码
逍遙賓館之謎
- 遠行出版社, 1976
諜海
- 遠景出版, 1982; ca: Tom Adams*
- 遠景出版, 1988
- 風雲時代, 1990; ISBN:9789579536417
- 遠景出版, 1992; ca: Tom Adams*
谍海
- 华文出版社, 1991; 阿嘉莎.克莉丝蒂侦探小说丛书4
桑苏西来客
- 贵州人民出版社, 1998; 阿加莎·克里斯蒂作品全集; ISBN:9787221047250
- 新星出版社, 2014; 阿加莎·克里斯蒂侦探作品集20; ISBN:9787513315111
密碼
- 遠流出版, 2003
密码
- 人民文学出版社, 2007; 阿加莎·克里斯蒂侦探推理系列; ISBN:9787020064519
- 商务印书馆, 2016; 阿加莎·克里斯蒂经典侦探作品集; ISBN:9787100119900
- 商务印书馆, 2019; 阿加莎·克里斯蒂经典侦探作品集; ISBN:9787100174053
NかMか
- 早川書房, 1957; ハヤカワ・ポケット・ミステリ(308)
- 早川書房, 1978, 1983(12th); ハヤカワ・ミステリ文庫(HM1-42); ISBN:9784150700423; ca: Hiroshi Manabe
- 早川書房, 2004; クリスティー文庫(48); ISBN:9784151300486
N또는M // N인가 M인가
- N인가 M인가; 일신서적공사, 1988
- 해문출판사, 1991
- 해문출판사, 1998
- 황금가지(애거서 크리스티 전집 50), 2008; ISBN:9788982737503