- UK
- Collins, London, Jan. 1927
- The Sketch, Jan.2-Mar.19 1924 as 'The Man who was No. 4'
- US
- Dodd, Mead, New York, 1927
- Blue Book Magazine, Mar. 1927 - Jan. 1928
Plot

Framed in the doorway of Poirot's bedroom stood an univited guest, coated from head to foot in dust. The man's gaunt face stared for a moment, then he swayed and fell.
Who was he? Was he suffering from shock or just exhaustion? Above all, what was the significance of the figure four, scribbled over and over again on a sheet of paper?
Contents
1. The Unexpected Guest
2. The Man from the Asylum
3. We Hear More About Li Chang Yen
4. The Importance of a Leg of Mutton
5. Disappearance of Scientists
6. The Woman on the Stairs
7. The Redium Thieves
8. In the House of the Enemy
9. The Yellow Jasmine Mystery
10. We Investigate at Croftlands
11. A Chess Problem
12. The Baited Trap
13. The Mouse Walks In
14. The Peroxide Blonde
15. The Terrible Catastrophe
16. The Dying Chinaman
17. Number Four Wins a Trick
18. In the Felsenlabyrinth
(different version) The Sketch (UK)
1. The Unexpected Guest (The Sketch, Jan.2 1924)
2. The Adventure of the Dartmoor Bungalow (The Sketch, Jan.9 1924)
3. The Lady on the Stairs (The Sketch, Jan.16 1924)
4. The Radium Thieves (The Sketch, Jan.23 1924)
5. In the House of the Enemy (The Sketch, Jan.30 1924)
6. The Yellow Jasmine Mystery (The Sketch, Feb.6 1924)
7. The Chess Problem (The Sketch, Feb.13 1924)
8. The Baited Trap (The Sketch, Feb.20 1924)
9. The Adventure of the Peroxide Blonde (The Sketch, Feb.27 1924)
10. The Terrible Catastrophe (The Sketch, Mar.5 1924)
11. The Dying Chinaman (The Sketch, Mar.12 1924)
12. The Crag in the Dolomites (The Sketch, Mar.19 1924)
(different version) Blue Book Magazine (US)
1. The Unexpected Guest (Blue Book Magazine, Mar. 1927)
2. The Dartmoor Adventure (Blue Book Magazine, Apr. 1927)
3. The Lady on the Stairs (Blue Book Magazine, May 1927)
4. The Radium Thieves (Blue Book Magazine, Jun. 1927)
5. In the House of the Enemy (Blue Book Magazine, Jul. 1927)
6. The Yellow Jasmine Mystery (Blue Book Magazine, Aug. 1927)
7. The Chess Problem (Blue Book Magazine, Sep. 1927)
8. The Baited Trap (Blue Book Magazine, Oct. 1927)
9. The Peroxide Blond (Blue Book Magazine, Nov. 1927)
10. The Enemy Strikes (Blue Book Magazine, Dec. 1927)
11. The Crag in the Dolomites (Blue Book Magazine, Jan. 1928)
Characters
Hercule Poirot, Arthur Hastings, Li Chang Yen, John Ingles, Jonathan Whalley, Robert Grant, Mr. John Halliday, Mrs. Halliday, Madame Olivier, Madame Inez Veroneau, Abe Ryland, Miss Martin, James, Deaves, Mr. Paynter, Gerald Paynter, Ah Ling, Dr. Quentin, Dr. Savaronoff, Gilmour Wilson, Sonia Daviloff, Claud "Claudie" Darrell, Miss Flossie Monro, Sydney Crowther, Monsieur Desjardeaux
Joseph Aarons, Mr. Appleby, Betsy Andrews, Andre, Monsieur Henri, Ivan, Wycherly, Sir Charles Kingwell, Miss Clark, Mademoiselle Claude, Captain Kent, Madame Gospoja, Pierre Combeau, Chap. Saunders, Insp. James Japp, Giraud, John St. Maur, Mr. Templeton, Mrs. Templeton, Micky Templeton, Dr. Treves, Captain Harvey, Mabel Palmer, Halsey, Mrs. Pearson, Abraham Biggs, Professor Bourgoneau, Bronsen, Dulcie "Cinderella" Hastings, Achille Poirot, Mr. Hodgson, Dr. Boritho, Mr. McNeil, Mayerling, Insp. Meadows, Ernest Luttrell, Austen Lee, Dr. Ridgeway, Arthur Leversham, Duke of Loamshire, Felix Laon, Countess Vera Rossakoff, Arthur Neville, George, Rubinstein, Capablanca, Lasker
Films & TV
- The Big Four, ITV/UK, 2013
- Agatha Christie's POIROT XIII
UK/US covers
Collins / HarperCollins
- Collins
- Crime Club, 1931
- Collins, Uniform edition, 1940
- Collins, 1962
- Fontana, 1965 ; ♦rm7guy
- Fontana, 1972: 2nd; ca: Tom Adams*
- Fontana, 1978; ca: Tom Adams*; ISBN:9780006151708
- Crime Club, 1979
- Fontana, 1984; ISBN:9780006169185
- Collins, 1986
- Fontana, 1988
- Fontana, 1990; ISBN:9780006169185
- HarperCollins, 1996; ISBN:9780006169185
- HarperCollins, 1997; Hardcover; ISBN:9780002310581
- HarperCollins, 2002
- HarperCollins, 2006; Facsimile edition/Hardcover; ISBN:9780007234516
- HarperCollins, 2007; Comic Strip edition/Hardcover; ISBN:9780007250653
- HarperCollins, 2008; Masterpiece edition; ISBN:9780007120819
- William Morrow Paperbacks, 2011; ISBN:9780062073877
- Center Point Large Print, 2011
- William Morrow Paperbacks, 2014; ISBN:9780062364616
- William Morrow & Company, 2016; Hardcover; ISBN:9780062573391
- HarperCollins, 2016; ISBN:9780008164904
- HarperCollins, 2016; ISBN:9780008164904
- Collins Crime Club, 2016; Hardcover; ISBN:9780008165000
- HarperFiction, 2018; ISBN:9780008255831
- William Morrow Paperbacks, 2021; ISBN:9780063083790
Dodd, Mead, Grosset&Dunlap
- Dodd, Mead & Co., NewYork, 1927; ♦Steve Marcum
- Grosset&Dunlap, 1927 2nd
- signed and dated on the half title page
Berkley
- Berkley; ISBN:9780425098820
- Berkley
- Berkley, 1987; ♦Sheldon Goldberg
- Berkley, 1985; ISBN:9780425067765; ♦Sheldon Goldberg
- Berkley, 1994; ISBN:9780425098820
Avon
- Avon(003), 1927
- Avon(245), 1950
- Avon(690), 1956; ca: Everett Raymond Kinstler
- Avon(T526), 1961
- Avon, T690; ♦Sheldon Goldberg
- Avon, G1223, 1964; ♦Sheldon Goldberg
Dell
- DELL, 1965
- DELL, 1968; ♦Sheldon Goldberg
- DELL(0562), 1972; ca: William Teason
- DELL, 1975
- DELL, 1978; ca: Marvin Mattelson; ISBN:9780440105626
- DELL, 1980; ca: Marvin Mattelson
- DELL, 1983; ♦Sheldon Goldberg
Pan
- Pan(G427), 1962; ca: W.Francis Phillipps; ♦Lauralee(ManorBooks)
- Pan(X269), 1963; ca: W.Francis Phillipps
- Pan, 1981; ISBN:9780330261395; ♦Sheldon Goldberg
Other Publishers
- Penguin, 1957; ♦Lauralee(ManorBooks)
- Ulverscroft Large Print, 1974; Hardcover; ISBN:9780854562831
- G.K.Hall, 1991; ISBN:9780816145331
- Planet Three Publishing, 2002
- HarperCollins, 2004
- Dover Mystery Classics, 2022; ISBN:9780486849812
Magazine
- The Blue Book Magazine, March, 1927
- The Blue Book Magazine, April, 1927
- The Blue Book Magazine, May, 1927
- The Blue Book Magazine, June, 1927
- The Blue Book Magazine, July, 1927
- The Blue Book Magazine, August, 1927
- The Blue Book Magazine, September, 1927
- The Blue Book Magazine, October, 1927
- The Blue Book Magazine, Novembaer, 1927
- The Blue Book Magazine, Decembaer, 1927
- The Blue Book Magazine, January, 1928
Audio


- Harpercollins, Audio Cassette, 2002; ISBN:9780007139705


- Audio Partners, Audio Cassette, 2005; ISBN:9781572704312



- Harpercollins, Audio CD, 2003

- HarperAudio, Audible Audiobook, 2012

- AudioGO, Audio CD, 2004; ISBN:9781572704329

- HarperCollins, Audio CD, 2016; ISBN:9781504762335
Western Europe covers
Les quatre
Le Masques (#134) 1933
- Le Masque, 1933
- Le Masque, 1933
- Le Masque
- Le Masque, 1981
- Le Masque, 1984; ISBN:9782702412626
- Le Masque, 1991; ISBN:9782702421932
- Le Masque, 2010; ISBN:9782702421932
- Masque Christie, 2015; ISBN:9782702442395
- Masque Christie, 2020; ISBN:9782702449691
Club des Masques (#30) 1967
- Club des Masques, 1967; ♦Sheldon Goldberg
- Club des Masques, 1986; ISBN:9782702400609
- Club des Masques, 1999; ISBN:9782702400609
Le Livre de Poche (#5530) 1981
- Le Livre de Poche, 1981; ISBN:9782253027201
- Le Livre de Poche, 1985; ISBN:9782253027201
- Le Livre de Poche, 1990
- Le Livre de Poche, 2002; ISBN:9782253027201
- Le Livre de Poche; ISBN:9782253027201
others
- Hachette Jeunesse, 1998; ISBN:9782012099432
- Hachette, 2005; Collection Agatha Christie (40); ISBN:9782846344081
- Emmanuel Proust, 2006; ISBN:9782848101378
- ISBN:9782830208610
De grote vier
- Sijthoff, 1957
- Sijthoff, 1959
- Sijthoff, 1970; ♦Paula Dekkers
- Sijthoff, 1974; ♦Eric Gellaerts
- Sijthoff, 1974
- Sijthoff, 1983
- Sijthoff, 1988; ISBN:9789021837451
- Luitingh-Sijthoff/Poema, 1993; ISBN:9789024512720
- The House of Books, 2017; ISBN:9789044352818
Die großen Vier
- Scherz(190), 1963
- Scherz(#190), 1969; ♦Hartmut Stollberg
- Scherz(#190), 1977
- Scherz(#190), 1979
- Scherz(#902), 1984
- Scherz; ▶ Art
- Scherz(#902), 1991
- Scherz, 1994; ISBN:9783502509028
- Scherz, 1994
- Scherz, 2006; ISBN:9783502516118
- Bertelsmann, 1985
- Weltbild
- Fischer, 2006; ISBN:9783596173280
- Hachette, 2008
- Atlantik, 2015; ISBN:9783455650532
e-book

Die großen Vier
Kindle Edition, 2021
Northern Europe covers
De fyra stora
- Bonniers, 1929
- Zebra(#254), 1969
Audio

- Saga Egmont, 2019; ISBN:9788711788424
De fire store
- Carit Andersen(#19), 1963
- Rosenkilde & Bahnhof, 2014; ISBN:9788771287721
- Lindhardt og Ringhof (e-bog), 2014; ISBN:9788771286687
Audio

De fire store
Rosenkilde, 2016; ISBN:9788711677407
De fire store
- Aschehoug, 1983
- Aschehoug, 1991
- Aschehoug, 2001
Neljä suurta
- WSOY, 1978; SAPO(216); ISBN:9789510084403
- WSOY, 1994; SAPO(216); ISBN:9789510084403
- WSOY, 2007; Loisto; ISBN:9789524597401
Fjórir stórir
Suur Nelik
- Elmatar, 1996; Öölane; ISBN:9789985832400
Lielais četrinieks
- Artava, 2003; ISBN:9789984121819
Didysis ketvertas
- Sirokas, 2012; ISBN:9786098057058
Southern Europe covers
Poirot e i quattro
- I Libri Gialli(#219), 1939
- Mondadori, 1976
- Mondadori, 1980; ISBN:9788804397632
- I Classici del Giallo(#530), 1987; ca: Carlo Jacono
- Mondadori, 1999; Oscar scrittori moderni
- Mondadori, 2002; Oscar scrittori moderni; ISBN:9788804507727
- Hachette Fascicoli, 2005
- I Classici del Giallo(#1223), 2009
- Mondadori, 2015; ebook; ISBN:9788852066313
- Mondadori, 2019; Oscar gialli; ISBN:9788804713432

Poirot e i quattro
Kindle, 2021
Audio

Poirot e i quattro
GoodMood, 2019

Poirot e i quattro
Mondadori Libri S.p.A., 2021
Los cuatro grandes / El gran cuatro
- Biblioteca Oro(#371), 1958; ♦Pablo Ramirez Jr.
- Biblioteca Oro(#371), 1961; ♦Pablo Ramirez Jr.
- Biblioteca Oro(#371)
- Biblioteca Oro(#284), 1980; ISBN:9788427202849
- Molino, 1987; ISBN:9788474618952
- Molino, 2000; ISBN:9788427285088
- RBA, 2004; ISBN:9788427285088
- El Patito Editorial, 2011; ISBN:9788493810467
- El Cuarto Hombre; Editora Continental, 2014
- Espasa, 2019; ISBN:9788467055993
- Círculo de Lectores
- Círculo de Lectores, 1994; ISBN:9788422645542
- Planeta; ♦Roberto López

Los cuatro grandes
Independently published, 2021; ISBN:9798546228255
Os Quatro Grandes / As Quatro Potências do Mal
Os Quatro Grandes
- Nova Fronteira, 1981; ♦Gabriel Paschoal
- Nova Fronteira, 1977
- Record, 1987; ISBN:9788511515718
- Record; ISBN:9788501155429
- Círculo do Livro, 2000; ISBN:9788533210684
- ASA(#19), 2003; ISBN:9789724135403
- L&PM, 2009; ISBN:9788525418944
- L&PM Pocket, 2011; ISBN:9788525418944
- RBA, 2009?
- Harpercollins Brasil, 2020; ISBN:9788595085916
- Kindle, 2021
As Quatro Potências do Mal
- Colecção Vampiro(#25)
Οι Μεγάλοι Τέσσερις / Η μεγάλη τετράδα του εγκλήματος / Οι 4 μεγάλοι
Οι Μεγάλοι Τέσσερις
- Λυχνάρι(A160), 2001; ISBN:9789605170622
- Λυχνάρι, 2001
- Λυχνάρι
- Ψυχογιός, 2019; ISBN:9786180130010
- Παρασκήνιο, 2015
Η μεγάλη τετράδα του εγκλήματος
- Καλοκάθης, 1993
- Καλοκάθης
- Καλοκάθης
Οι 4 μεγάλοι
- Έψιλον
Велика четворка / Velika četvorka
- Narodna knjiga - Alfa (Beograd)
- Narodna knjiga & Politika (Beograd), 2006; ♦Svetlana Andjelic
Velika četvorka
- Nova knjiga, 2015; ISBN:9788674706015
Velika četvorka
- Mladinska knjiga & Izvori (Zagreb), 1993
Velika četverica
- Mladinska knjiga Založba, 2011
Големата четворка / Golemata četvorka
- Ѓурѓа, 2010
Eastern Europe covers
Veľká štvorka
- Slovenský spisovateľ, 2019; ISBN:9788022021678
Velká čtyřka
- Knižní klub, 1994; ISBN:9788024220376
- Knižní klub, 2005; ISBN:9788024205328
- Knižní klub, 2019; ISBN:9788076174399
A titokzatos Négyes / A "Négyek társasága" / A Nagy Négyes
- Pesti Hirlap, 1934; ♦Czibóka Tamas
- Hunga Könyvek, 1993; ♦Czibóka Tamas
- Hunga Könyvek, 1993; ♦Horváth Tamás
- Európa Könyvkiadó, 2013; ISBN:9789630795593
- Helikon Kiadó, 2021; ISBN:9789634797234
Великата четворка
- Селекта, 1994
- Ера(#37), 2012; ISBN:9789543891436
Wielka czwórka
- Prószyński i S-ka, 1996; ISBN:9788386868827
- Wydawnictwo Dolnośląskie, 2001; Seria z Gawronem; ISBN:9788370238681
- Prószyński i S-ka, 2003; ISBN:9788373370333
- Hachette Polska, 2003; Kolekcja Hachette: Agatha Christie(68); ISBN:9788371847295
- Wydawnictwo Dolnośląskie, 2009; Agata Christie - Królowa Kryminału; ISBN:9788324587865
- Wydawnictwo Dolnośląskie, 2012; Klasyka Kryminału; ISBN:9788324592319
- Wydawnictwo Dolnośląskie, 2015; ISBN:9788327154033
- Wydawnictwo Dolnośląskie, 2017; Agatha Christie Kolekcja Kryminałów(74); ISBN:9788327154958
Audio

Wielka czwórka
Saga Egmont, 2021
Cei patru mari / Misterul celor patru
- Abaris Press, 1992
- Excelsior-Multi Press, 1992
- Rao, 2012; ISBN:9786066091213
- Rao, 2015 (Editia colectionarului); ISBN:9786066097918
- Litera, 2016; ISBN:9786063310485
- Litera, 2021; Buzz Books; ISBN:9786063372360
Велика четвірка
Большая четверка // Большая четвёрка / Тайна Большой Четверки
- *OMNIBUS*
Центрполиграф, 1997; Полное собрание детективных произведений
- Международный книжный дом, 1997
- *OMNIBUS*
Центрполиграф, 2000; Весь Эркюль Пуаро
- *OMNIBUS*
Центрполиграф, 2002; Весь Эркюль Пуаро
- АСТ, 2004
- АСТ, 2004
- *OMNIBUS*
Эксмо, 2008; Вся Кристи
- Эксмо, 2009
- Эксмо, 2013; ISBN:9785699356140
- Эксмо, 2012; ISBN:9785699559343
- Эксмо, 2014; Pocket book; ISBN:9785699716661
- Эксмо, 2017; Агата Кристи. Серебряная коллекция; ISBN:9785699806812
- Hachette, 2018
- Эксмо, 2019; Агата Кристи. Первая леди детектива; ISBN:9785041003302
- Эксмо, 2021; Агата Кристи. Любимая коллекция; ISBN:9785041133344
Audio

Большая четверка
Эксмо, 2018
Middle East & Asian covers
დიდი ოთხეული / დიდი ოთხიანი
- პალიტრა L, 2015
- პალიტრა L, 2021; ISBN:9789941328169
Büyük Dörtler / Büyük Dört / Esrarengiz Dörtler
- Esrarengiz Dörtler, Türkiye Yayınevi, 1946
- Büyük 4, Ak Kitabevi, 1963
- Büyük Dört, Ak Kitabevi,
- Büyük Dörtler, Altın Kitaplar, 1980
- Büyük Dörtler, Altın Kitaplar, 2010
- Büyük Dörtler, Altın Kitaplar, 2019; ISBN:9789752105065
Böyük Dördlük
- Qanun Nəşriyyatı, 2018; ISBN:9789952265552
מסתרי ארבעת הגדולים
- מסתרי ארבעת הגדולים
על ידי מזרחי
الأربعة الكبار / عصابة الأربعة
الأربعة الكبار
- JARIR Reader, 2009; ISBN:6281072056582
- AJYAL Publishers, 2005; ISBN:978219572553
- AJYAL Publishers,
- دار أسامة
2008
- مكتبة الفنون والادب
2014
عصابة الأربعة
- دار النجمة
چهار غول بزرگ / چهار قدرت بزرگ / آن چهار تن بزرگ
چهار غول بزرگ
- Hermes books, A.P.1397; ISBN:9789643637699
- Hermes books, A.P.1391; ISBN:9789643637699
چهار قدرت بزرگ
- ارغوان
A.P.1372
آن چهار تن بزرگ
- Manaketab, A.P.1395; ISBN:97860082999134
(Marathi) द बिग फोर / (Malayalam) നാലു കുറ്റവാളികൾ
- (Marathi) Padmagandha Prakashan, 2010; ♦Ralf M.M. Stultiëns
- (Malayalam) Litmus, 2013; ISBN:9788126462056
සිව් මහා බලවතුන්
- Sarasavi Publishers, ; ISBN:9789553105707
Empat Besar
- Gramedia, 1986
- Gramedia, 1997; ISBN:9789796860159
- Gramedia, 2007; ISBN:9789792228632
- Gramedia, 2017; ISBN:9789792228632
สี่อาชญากร
สี่อาชญากร
- ปรีชา-ดวงตา, 2007(2525)
- 1999(2542), ♦Rattanachai Lueangwongngam
- น้องใหม่, 1993(2536); ISBN:9789747371765; ♦Rattanachai Lueangwongngam
- สร้างสรรค์บุ๊คส์; ISBN:9789743414039; ♦Ratakorn
- 2013
- TSG Publishing, 2004(2547); ISBN:9780007120819
- ดอกหญ้าวิชาการ; ISBN:9789749932780
Bộ Tứ / Thế Giới Ngầm
Bộ Tứ
- 2000
Thế Giới Ngầm
- Công an nhân dân, 2003
四巨頭 / 四大魔頭 / 四大魔头 / 四大天王 / 四魔头
四巨頭
- 林白出版社, 1981
- 黑龙江人民出版社, 1987
四大魔頭
- 遠景出版, 1983
- 遠景出版, 1988
- 風雲時代, 1990
- 遠景出版, 1992
四大魔头
- 华文出版社(阿嘉莎.克莉丝蒂侦探小说丛书 11), 1991
- 内蒙古人民出版社(阿加莎·克里斯蒂推理侦探漫画作品), 2010; ISBN:9787204104345
- 圣才教育, 2014
四大天王
- 遠流出版(克莉絲蒂推理全集), 2002; ISBN:9789573247623
四魔头
- 人民文学出版社(阿加莎·克里斯蒂侦探推理系列), 2008; ISBN:9787020066322
- 人民文学出版社(阿加莎·克里斯蒂侦探推理“波洛”系列), 2009
- 新星出版社(阿加莎·克里斯蒂侦探作品集54), 2017; ISBN:9787513324168
ビッグ4 / 謎のビッグ・フォア / 恐怖の四巨人
ザ・ビッグ・4
- 大日本雄弁会講談社, 1956
恐怖の四巨人
- 大日本雄弁会講談社, 1957
- 旺文社/中二ライブラリー, 1962
ビッグ4
- 早川書房, 1959, 1975(5th); ハヤカワ・ポケット・ミステリ(493)
- 早川書房, 1984, 1996(19th); ハヤカワ・ミステリ文庫(HM1-77); ISBN:9784150700775; ca: Hiroshi Manabe
- 早川書房, 2004; クリスティー文庫(4); ISBN:9784151300042
謎のビッグ・フォア
- 創元推理文庫, 1976
- 創元推理文庫, 1976, 1991(29th); ISBN:9784488105273
- 旺文社/中二文庫, 1965
- 学研/中学二年コース付録, 1963
빅 포
빅 포
- 해문출판사, 1991
- 해문출판사(애거서 크리스티 미스터리 44), 2000; ISBN:9788938202444
- 황금가지(애거서 크리스티 전집 25), 2007; ISBN:9788982737251
- 수수께끼의 빅 4, 문공사(월드미스테리 1), 1989
- 빅포의 음모, 백양출판사, 1991