- UK
- Collins, London, Oct. 1973
- US
- Dodd, Mead, New York, 1973
Plot

Tommy and Tuppence Beresford have just become the proud owners of an old house in an English village. Along with the property, they have inherited some worthless bric-a-brac, including a collection of antique books. While rustling through a copy of The Black Arrow, Tuppence comes upon a series of apparently random underlinings.
However, when she writes down the letters, they spell out a very disturbing message: M-a-r-y- J-o-r-d-a-n-d-i-d-n-o-t-d-i-e-n-a-t-u-r-a-l-l-y...
Characters
Tuppence Beresford • Tommy Beresford • Colonel Atkinson • Albert Batt • Andrew Beresford • Henry Bodlicott • Issac Bodlicott • Miss Collodon • Angus Crispen • Mary Jordan • Iris Mullins • Inspector Norris Colonel Ephraim Pikeawy • Mr. Robinson
UK/US covers
Collins/HarperCollins
- Collins Crime Club, 1973; ISBN:9780002311908
- Fontana, 1974; ISBN:9780006134947
- Fontana, 1976; ISBN:9780006142553; ca: Tom Adams*
- Fontana, 1978; ISBN:9780006152972; ca: Tom Adams*
- Fontana, 1982; ISBN:9780006167372
- Fontana
- Fontana, 1990
- HarperCollins, 1991; ISBN:9780061002762
- HarperCollins, 1996; ISBN:9780006165279
- HarperCollins, 2003; Hardcover
- HarperCollins, 2001
- HarperCollins, 2008; Masterpiece edition; ISBN:9780007111480
- HarperCollins, 2011; Facsimile edition; ISBN:9780002311908
- William Morrow Paperbacks, 2012; ISBN:9780062074348
- Center Point Pub, 2014; Library Binding/Hardcover; ISBN:9781628990997
- HarperCollins, 2014; ISBN:9780007590636
- HarperFiction, 2017; ISBN:9780008255718
- HarperCollins, 2020; ISBN:9780007111480
Dodd, Mead
- Dodd,Mead, 1973; ISBN:9780396068815
Bantam
- Bantam, 1973; ISBN:9780553100662
- Bantam, 1980; ISBN:9780553194111; ca: Tom Adams*; ♦Sheldon Goldberg
- Bantam, 1987
other publishers
- G.K.Hall, 1992; ISBN:9780816131235
- Ulverscroft Large Print Books, 1992; ISBN:9780708927083
- Signet, 2000; ISBN:9780451200532
- Planet Three Publishing, 2004
Audio

Postern of Fate
HarperCollins, 2006; ISBN:9780007210817

Postern of Fate
Macmillan Audio Books, 2002; ISBN:9780333989098

Postern of Fate
Macmillan Audio, 2004; ISBN:9781559279840

Postern of Fate
Macmillan Digital Audio, 2007; ISBN:9780230015784

Postern of Fate
AudioGO, 2004; ISBN:9781572703667

Postern of Fate
Audio Partners, 2004; ISBN:9781572703650

Postern of Fate

Postern of Fate
HarperCollins, 2007

Postern of Fate
HarperCollins, 2007; ISBN:9780007212569

Postern of Fate
AudioGO, 2012; ISBN:9781609983741

Postern of Fate
HarperAudio, 2012

Postern of Fate
HarperCollins Publishers and Blackstone Audio, 2016; ISBN:9781504764643

Postern of Fate
HarperCollins, 2007
Western Europe covers
Le cheval à bascule
Le Masque (#1509) 1978
- Le Masque, 1978; ISBN:9782702407042
- Le Masque, 1988; ISBN:9782702418284
- Le Masque, 2001
- Masque Christie; ISBN:9782702418284
- Masque Christie, 2014; ISBN:9782702441534
Club des Masques (#514) 1983
- Club des Masques, 1983
- Club des Masques, 1999; ISBN:9782702414682
Le Livre de Poche (#6607) 1989
- Le Livre de Poche, 1974
- Le Livre de Poche, 1989
- Le Livre de Poche, ; ISBN:9782253049210
- Le Livre de Poche, ; ISBN:9782253049210
other publishers
- Librairie des champs élysées, 1974; ISBN:9782702402962
- Edito-Service S.A.
- Hachette, 2007
Moord in de bibliotheek
- Sijthoff, 1973; ISBN:9789021801339
- Sijthoff, 1974; ♦Eric Gellaerts
- Sijthoff, 1974
- Sijthoff, 1983
- Sijthoff, 1986; ISBN:9789021835037
- Luitingh-Sijthoff, 1998; Poema; ISBN:9789024513727
- The House of Books, 2015; ISBN:9789048823413
- Dark Dragon Books B.V., 2018; ISBN:9789460789700
- Rainbow, 2021; ISBN:9789041714305
Audio

- The House of Books, 2018
Alter schützt vor Scharfsinn nicht // Die geheimnisvolle Botschaft
- Scherz, 1973
- Bertelsmann, 1980
- Scherz, 1981; ISBN:9783502508175
- Scherz, 1989
- Scherz, 1992; ISBN:9783502513452
- Scherz, 1996
- Scherz, 1997
- Die geheimnisvolle Botschaft; Loewe, 2001; ISBN:9783785524909
- Scherz, 2003; ISBN:9783502518839
- Fischer, 2005; ISBN:9783596171422
- Hachette, 2011
Audio

- Der Hörverlag, 2007
Northern Europe covers
Ödets port
- Bonniers, 1974; ISBN:9789100399597
Audio

Ödets port
Saga Egmont, 2018; ISBN:9788711788356
Skæbnens bagveje
- Forum, 1974; ISBN:9788755304956
- Forum Krimi, 1976; ISBN:9788755304956
- Rosenkilde, 2017; ISBN:9788711746974
- Lindhardt og Ringhof (e-bog), 2021; ISBN:9788711746974
Audio

Skæbnens bagveje
Lindhardt og Ringhof, 2022; ISBN:9788728422724
Gamle synder ruster ikke
- Aschehoug, 1983; ISBN:9788203110498
- Aschehoug, 1993; ISBN:9788203172656
Kohtalon portti
- WSOY, 1983; ISBN:9789510117552
- WSOY, 2017; ISBN:9789510422069
- WSOY, 2018; ISBN:9789510440346
Saatuse Tagauks
- Varrak, 2006; ISBN:9789985312162
Likteņavārti
- Artava, 1996; ISBN:9789984529929
Lemties vartai
- Sirokas, 2013; ISBN:9786098057096
Southern Europe covers
Le porte di Damasco
- Mondadori, 1979; Il Giallo Mondadori(1611)
- Mondadori, 1989; ISBN:9788804398158
- Mondadori, 1986; I Classici del Giallo(515); ca: Carlo Jacono
- Mondadori, 1995; Oscar scrittori moderni; ISBN:9788804398158
- Mondadori, 2003; Oscar scrittori moderni; ISBN:9788804510062
- Hachette Fascicoli, 2005
- Collaterale del quotidiano La Stampa, 2008
- Mondadori, 2015; ebook; ISBN:9788852064449
La puerta del destino
- Molino, 1974; ISBN:9788427219113
- Biblioteca Oro, 1974
- Biblioteca Oro, 1987; ISBN:9788427203006; ca: Tom Adams*; ♦Sheldon Goldberg
- Molino, 2000; ISBN:9788427285781; ca: Tom Adams*
- Planeta, 2001; ISBN:9789504907275
- Molino, 2004; ISBN:9788427298781
- RBA (EPUB, 2013)
Portal do Destino / A Portal do Destino / Morte pela Porta das Traseiras
Portal do Destino
- Nova Fronteira, 1974
- Nova Fronteira, 1974; ISBN:9788520913284
- Record, 1987; ISBN:9788511513998
- Record, 2000; ISBN:9788501155566
- L&PM Pocket, 2010; ISBN:9788525419965
- Globo Livros, 2019; ISBN:9786580634088
A Portal do Destino
- ASA(#80), 2014; ISBN:9789892327969
Morte pela Porta das Traseiras
- Livros do Brasil, 1975; Colecção Vampiro(#333)
Η πύλη του πεπρωμένου
- Λυχνάρι; ISBN:9789605170509
- Λυχνάρι
- Λυχνάρι
- Λυχνάρι, 1973
- Λυχνάρι(A123), 2011
- Ψυχογιός, 2021; IBSN:9786180136944
Zaleđe sudbine
- Mladinska knjiga (Beograd), 2009; ♦Svetlana Andjelic
- BDE Media, 2021; ISBN:9788660121594
Nič ni tako skrito
- Državna založba Slovenije (Ljubljana), 1978
- Delo (Ljubljana), 1983
Eastern Europe covers
Brána osudu
- Knižní klub, 2015; ISBN:9788024247762
- Knižní klub, 2015; ISBN:9788024247779
Sors-rejtekajtó // A sors kapuja
- A sors kapuja; Hungalibri, 1993; Hunga Könyvek; SBN:9789637458859; ♦Czibóka Tamas
- Európa Kiadó, 2015; Agatha Christie 125-Sorozat; ISBN:9789634051480
Задната врата на съдбата
- Абагар, 1995; ISBN:9789545841507
- Ера(#76), 2017; ISBN:9789543894383
Tajemnica Wawrzynów
- Wydawnictwo Dolnośląskie, 1997; Seria z Gawronem; ISBN:9788370235987
- Prószyński i S-ka, 2003; ISBN:9788372558862
- Hachette Polska: Kolekcja Hachette: Agatha Christie(78), 2004; ISBN:9788371847394
- Wydawnictwo Dolnośląskie, 2005; Seria z Gawronem; ISBN:9788373843721
- Wydawnictwo Dolnośląskie, 2008; ISBN:9788324587230
- Wydawnictwo Dolnośląskie, 2010; Agata Christie - Królowa Kryminału; ISBN:9788324590773
- Wydawnictwo Dolnośląskie, 2014; Klasyka Kryminału; ISBN:9788327150950
- Wydawnictwo Dolnośląskie, 2017; Agatha Christie Kolekcja Kryminałów(70); ISBN:9788327154910
Poarta destinului / Secretul casei dintre lauri
- Excelsior-Multi Press, 1992; ISBN:9789739086417
- Litera, 2017; ISBN:9786063317811
Врата судьбы // Превратности судьбы
- *OMNIBUS*
Центрполиграф: Полное собрание детективных произведений, 1999
- *OMNIBUS*
Центрполиграф: Королева детектива, 2002
- Амфора, 2005
- Эксмо, 2008; Вся Кристи; ISBN:9785699300914
- Эксмо, 2009; ISBN:9785699382071
- Эксмо, 2012; Детективный клуб Агаты Кристи; ISBN:9785699575565
- Hachette, 2017; Коллекция Агата Кристи
- Эксмо, 2019; Агата Кристи. Серебряная коллекция; ISBN:9785699961979
- Эксмо, 2019; Агата Кристи. Любимая коллекция; ISBN:9785699961979
Audio

Врата судьбы
Эксмо, 2020
Middle East & Asian covers
Kader Kapısı // Cinayetler Kapısı
- Cinayetler Kapısı; Altın Kitaplar, 1974
- Cinayetler Kapısı; Altın Kitaplar, 1986
- Altın Kitaplar, 2009; ISBN:9789752110885
- Altın Kitaplar, 2017; ISBN:9789752110885
מותה של מרגלת
- מותה של מרגלת
על ידי מזרחי
1975
بوابة المصير
بوابة المصير
- JARIR Reader, 2016; ISBN:6281072088132
أبواب القدر
دروازۀ سرنوشت / راز خانه متروک
دروازۀ سرنوشت
- Hermes Books, A.P.1396; ISBN:9789643639341
- Hermes Books
راز خانه متروک
- جاودان خرد
A.P.1375
Gerbang Nasib
- Gramedia, 1991; ISBN:9789795112464; ca: Tom Adams*
- Gramedia; ; ISBN:9789795112464; ca: Tom Adams*
- Gramedia, 2013; ISBN:9789792293524
- Gramedia, 2018; ISBN:9789792293524
ประตูมรณะ
- สร้างสรรค์บุ๊คส์; ISBN:9789743415449
- ♦Rattanachai Lueangwongngam
命運之門 / 命运之门 / 死亡暗道
命運之門
- 忠佑公司, 1980
- 遠景出版, 1985; ca: Tom Adams*
- 遠流, 1988
- 風雲時代, 1990
- 遠景出版, 1992; ca: Tom Adams*
命运之门
- 华文出版社(阿嘉莎·克莉丝蒂探案小说精粹), 1993; ISBN:9787507502046
- 贵州人民出版社(阿加莎·克里斯蒂作品全集), 1998; ISBN:9787221047069
- 新星出版社(阿加莎·克里斯蒂侦探作品集35), 2015; ISBN:9787513318136
死亡暗道
- 遠流出版(克莉絲蒂推理全集), 2003; ISBN:9789573250845
運命の裏木戸
- 早川書房, 1974; ハヤカワ・ポケット・ミステリ(1234)
- 早川書房, 1981, 1981(3th); ハヤカワ・ミステリ文庫(HM1-59); ISBN:9784150700591; ca: Hiroshi Manabe
- 早川書房, 2004; クリスティー文庫(50); ISBN:9784151300509
운명의 문 / 운명의 뒷문
운명의 문
- 해문출판사, 1990
- 해문출판사, 2000; 애거서 크리스티 미스터리80; ISBN:9788938202802
- 황금가지, 2013; 애거서 크리스티 전집75; ISBN:9788982737756
운명의 뒷문
- 자유시대사, 1988; 애거서 크리스티 문고34