- UK
- Collins, London, Jul. 1937
- Women's Pictorial, Feb.20-Apr.3 1937 as 'Mystery of Littlegreen House'
- US
- Dodd, Mead, New York, 1937 as "Poirot Loses a Client"
- The Saturday Evening Post, Nov.7-Dec.19 1936 as 'Poirot Loses a Client'
Plot

Everyone blamed Emily's accident on a rubber ball left on the stairs by her frisky terrier. But the more she thought about her fall, the more convinced she became that one of her relatives was trying to kill her.
On April 17th she wrote her suspicions in a letter to Hercule Poirot. Mysteriously, he didn't receive the letter until June 28th ... by which time Emily was already dead.
Contents
1. The Mistress of Littlegreen House • 2. The Relations • 3. The Accident • 4. Miss Arundell Writes a Letter • 5. Hercule Poirot Recieves a Letter • 6. We Go to Littlegreen House • 7. Lunch at the George • 8. Interior of Littlegreen House • 9. Reconstruction of the Dog's Ball Incident • 10. Visit to Miss Peabody • 11. Visit to the Misses Tripp • 12. Poirot Discusses the Case • 13. Theresa Arundell • 14. Charles Arundell • 15. Miss Lawson • 16. Mrs Tanios • 17. Dr Tanios • 18. 'A Nigger in the Woodpile' • 19. Visit to Mr Purvis • 20. Second Visit to Littlegreen House • 21. The Chemist; The Nurse; The Doctor • 22. The Woman on the Stairs • 23. Dr Tanios Calls on Us • 24. Theresa's Denial • 25. I Lie Back and Reflect • 26. Mrs Tanios Refuses to Speak • 27. Visit of Dr Donaldson • 28. Another Victim • 29. Inquest at Littlegreen House • 30. The Last Word
Characters
Emily Arundel • Wilhemina • Charles • Theresa • Bella • Jacob • Julia Tripp • Isabel Tripp • Dr. Grainger • Arthur Hastings • Hercule Poirot
Films & TV
- Dumb Witness, ITV/UK, 1996
- Agahta Christie's POIROT VI
- Témoin muet, FR, 2013
- Les petits meurtres d'Agatha Christie Saison 2
UK/US covers
Collins / HarperCollins
- Collins, 1937
- Crime Club, 1960; ♦Lauralee(ManorBooks)
- The Book Club, 1937; ♦Bevis Benneworth
- Fontana, 1959(250) 2nd
- Fontana, 1966; ♦Lauralee(ManorBooks)
- Fontana, 1975; ISBN:9780006137832
- Fontana, 1984; ♦Sheldon Goldberg
- Fontana, 1988; ♦Sheldon Goldberg
- HarperCollins, 1995; ISBN:9780006168089
- HarperCollins, 1999; Hardcover; ISBN:9780002310826
- HarperCollins, 2002
- HarperCollins, 2007; Facsimile edition/Hardcover; ISBN:9780007234462
- HarperCollins, 2008; Masterpiece edition; ISBN:9780007120796
- HarperCollins, 2010; Comic Strip edition/Hardcover; ISBN:9780007293100
- William Morrow & Company, 2011; ISBN:9780062073754
- Center Point, 2013; Large Print edition/Hardcover; ISBN:9781611736830
- HarperCollins, 2015
- HarperCollins, 2015; ISBN:9780008129569
- William Morrow & Company, 2016; Hardcover; ISBN:9780062573247
- HarperFiction, 2018; ISBN:9780008256012
Dodd, Mead
- Dodd, Mead, 1937
Avon
- Avon(70), 1945
- Avon(353), 1951
- Avon(T192), 1957; ♦Sheldon Goldberg
- Avon(T192a)
- Avon(F103), 1959; ♦Sheldon Goldberg
- Avon, 1963
Dell
- DELL(#6984), 1965; ca: William Teason
- DELL
- DELL, 1974; ISBN:9780440169840
- DELL
- DELL, 1976; ♦Sheldon Goldberg
Berkley
- Berkley; ISBN:9780425090381
- Berkley, 1986; ♦Sheldon Goldberg
- ISBN:9780425098547
- Berkley, 1984
- Berkley, 1996; ISBN:9780425098547
Pan
- Pan(82), 1949
- Pan(82), 1950
- Pan(82), 1952
- Pan; ♦Lauralee(ManorBooks)
- Pan, 1969
- Pan, 1976; ISBN:9780330023344
other publishers
- G.K.Hall, 1991
- Tower Mystery, 1943
- Mercury Mystery
- Planet Three Publishing, 2002
- Albatross, 1938
Magazine
- The Saturday Evening Post
- The Saturday Evening Post, Nov. 7, 1936
- The Saturday Evening Post, Nov. 14, 1936
- The Saturday Evening Post, Nov. 21, 1936
- The Saturday Evening Post, Nov. 28, 1936
- The Saturday Evening Post, Dec. 5, 1936
- The Saturday Evening Post, Dec. 12, 1936
- The Saturday Evening Post, Dec. 19, 1936
Audio

- HarperCollins, 2002; ISBN:9780007139699


- Audiogo, 2006; ISBN:9781572705128

- Audio Partners, 2006; ISBN:9781572705135


- AudioGO, 2010; ISBN:9781602838086

- BBC Worldwide, 2010

- BBC Audiobooks, 2007; ISBN:9781846071966

- HarperCollins, 2004; IBSN:9780007191178

- HarperAudio, 2012

- Blackstone Pub, 2016; ISBN:9781504763042

- HarperCollins, 2007
Western Europe covers
Témoin muet
Le Masque (#377) 1950
- Le Masque, 1950
- Le Masque, 1957
- Le Masque, 1982
- Le Masque, 1983
- Le Masque, 1991; ISBN:9782702418130
- Le Masque, 1992
- Le Masque, 1993; ISBN:9782702423974
- Masque Christie, 2012; ISBN:9782702436561
Club des Masques (#54) 1968
- Club des Masques, 1968; ♦Per Olaisen
- Club des Masques, 1979
- Club des Masques, 1985
Le Livre de Poche (#6076) 1985
- Le Livre de Poche, 1985
- Le Livre de Poche, 1992
- Le Livre de Poche, 2010; ISBN:9782253936978
- Le Livre de Poche, 2019; ISBN:9782253036975
other publishers
- Hachette: Collection Agatha Christie (43), 2006; ISBN:9782846344111
- Emmanuel Proust, 2009; ISBN:9782848101903
- Edito-Service S.A.
Brief van een dode
- Sijthoff, 1951
- Sijthoff, 1961
- Sijthoff, 1967
- Sijthoff, 1974; ♦Eric Gellaerts
- Sijthoff, 1975
- Sijthoff, 1983
- Sijthoff, 1985
- Luitingh-Sijthoff, 2001; Poema; ISBN:9789024511822
- Overamstel Uitgevers, 2015; ISBN:9789048823840
- Overamstel Uitgevers, 2015; ISBN:9789048823253
Der ballspielende Hund
- Talverlag, 1938
- Scherz, 1959
- Scherz, 1960
- Scherz, 1961
- Scherz, 1970
- Scherz, 1975
- Scherz, 1977
- Scherz, 1979
- Edito Service, 1982
- Scherz, 1986
- Scherz, 1987
- Scherz, 1991; ISBN:9783502515388; ▶ Art
- Scherz, 1993; ISBN:9783502559870
- Loewe, 1994; ISBN:9783785526781
- Scherz, 1996
- Scherz, 1996; ISBN:9783502515388
- Scherz, 1998; ISBN:9783502552420
- Scherz, 1998
- Scherz, 2000
- Weltbild, 2006
- Fischer, 2006; ISBN:9783596171446
- Hachette, 2009
- Atlantik, 2015; ISBN:9783455650549
Audio


- Der Hörverlag, 2019
Northern Europe covers
Det stumma vittnet
- Bonniers, 1961; ca: Per Beckman
- Bonniers, 1965; Zebra-bok (194)
- Bonniers, 1974; ISBN:9789100389802; ca: Ian Robinson
- Bonniers, 1987; Underhållningsbokklubben; ISBN:9789100482121
- Bookmark, 2015; ISBN:9789188171696; ca: Sara R. Acedo
Stumt vidne // Anklagerens Vidne
- Hasselbalchs, 1938
- Carit Andersens, 1961
- Anklagerens Vidne; Forum Krimi, 1973; ISBN:9788755301764
- Wøldike, 1982
- Rosenkilde & Bahnhof, 2014; ISBN:9788771287776
- Rosenkilde, 2014; ISBN:9788771286731
Audio




Stumt vidne
Rosenkilde, 2017; ISBN:9788711765234
Det tause vitne
- Aschehoug, 1976
- Aschehoug, 1984
- Aschehoug, 1987
- Aschehoug, 2002; ISBN:9788203206610
Mykkä todistaja
- WSOY: SAPO(6), 1953/1956; ca: Ahtiala
- WSOY, 1985
Þögult vitni
- Skjaldborg, 2005
Tumm tunnistaja
- Elmatar: Öölane, 1995; ISBN:9789985832103
Mēmais liecinieks
- Artava, 1994; ISBN:9789984529066
Nebylus liudytojas / Nebylus liudininkas
- Nebylus liudytojas; Žuvėdra, 1996; ISBN:9789986500155
- Nebylus liudininkas; Sirokas, 2014; ISBN:9786098057157
Southern Europe covers
Due mesi dopo
- Mondadori, 1938; I Libri Gialli(#198)
- I classici del giallo Mondadori(#236), 1976
- Mondadori, 1984; ISBN:978-8804172239; ♦Sheldon Goldberg
- Mondadori, 1988; I Classici del Giallo(557); ca: Carlo Jacono
- Mondadori, 1996; Oscar scrittori moderni; ISBN:9788804414124
- Mondadori, 2003; Oscar scrittori moderni; ISBN:9788804510000
- Mondadori, 2007; I Classici del Giallo(1147)
- Hachette Fascicoli, 2005
- RBA, 2008
- Mondadori, 2010; ebook; ISBN:9788852014932
- Mondadori, 2019; Oscar gialli; ISBN:9788804709824
- RCS Corriere della Sera, 2015
- Mondadori, 2021
Audio

- GOODmood, Audible Audiobook, 2019
El testigo mudo
- Biblioteca Oro(#328), 1952
- Biblioteca Oro, 1958
- Biblioteca Oro, 1958; ♦Pablo Ramirez Jr.
- Biblioteca Oro, 1982; ca: William Teason
- Círculo de Lectores, 1993
- Planeta, 1995; ISBN:9788477511748
- Molino, 1996; ISBN:9788427285293
- Círculo de Lectores, 2004
- Molino, 2004; ISBN:9788427298552
- RBA (EPUB, 2013)
- Espasa, 2021; ISBN:9788467059809
Testimoni mut
- La Llar del Llibre(#38), 1990
- Columna, 1998; ISBN:9788483004203
- Edicions Proa, 2001; ISBN:9788482564814
Poirot Perde uma Cliente / Testemunha muda
Poirot Perde uma Cliente
- Nova Fronteira, 1980; ISBN:9788520903285
- Record, 1987; ISBN:9788511514728
- Record, 2000; ♦Emilaine
- L&PM Pocket, 2010; ISBN:9788525420855
- HarperCollins Brasil, 2017; ISBN:9788595080027
- Livros do Brasil; Colecção Vampiro(#205)
Testemunha muda
- ASA(#42), 2006; ISBN:9789724148762
- ASA, 2017; ISBN:9789892340357
Σιωπηλός μάρτυς / Σιωπηλός μάρτυρας / Ο δολοφόνος της γηραιάς κυρίας
Σιωπηλός μάρτυς
- Λυχνάρι(A019), 1996; ISBN:9789605170226
- Λυχνάρι(A019)
- Λυχνάρι(A019)
- Λυχνάρι(A019); ISBN:9789605170226
- Λυχνάρι(M048), 2005; ISBN(10):9605172739
- Λυχνάρι
Σιωπηλός μάρτυρας
- ΕΡΜΕΙΑΣ
- ΕΡΜΕΙΑΣ; ISBN:9789602160640
- Ψυχογιός, 2020; ISBN:9786180135138
Ο δολοφόνος της γηραιάς κυρίας
- Πάπυρος, 1975
Ћутљиви сведок / Cutljivi svedok / Nemi svedok
- Ћутљиви сведок; Narodna knjiga - Alfa (Beograd), 1997
- Cutljivi svedok; Narodna knjiga - Alfa (Beograd), 2002; ♦Svetlana Andjelic
- Nemi svedok; Mladinska knjiga, 2014
Nijemi svjedok
- Nova knjiga, 2017
Nijemi svjedok
- Globus (Zagreb), 1976; ♦Svetlana Andjelic
Nema priča
- Mladinska knjiga (Ljubljana), 2008; ♦Svetlana Andjelic
- Mladinska knjiga Založba d.d., 2008
Eastern Europe covers
Nemý svedok
- Zelená knižnica, 2014; ISBN:9788022017879
- Slovenský spisovateľ, 2020; ISBN:9788022022125
Němý svědek
- Karel Voleský, 1939
- Knižní klub, 2006; ISBN:9788024217819
- Kalibr, 2019; ISBN:9788076171305
Audio

- OneHotBook, 2019
A kutya se látta // Néma tanú
- Néma tanú; Nova Kiado, 1940
- Magyar Könyvklub/Európa Kiadó, 1993; Képkeretes-Sorozat; ISBN:9789638224255; ♦Czibóka Tamas
- Aquila Kiadó, 2006; Aquila Könyvek; ISBN:9789636795580; ♦Horváth Tamás
- Európa Kiadó, 2012; Madaras Sorozat; ISBN:9789630794053
- Helikon Kiadó, 2019; ISBN:9789634793120
Audio

Безмълвният свидетел
- Абагар, 1994; ISBN:9789545840784
- Ера(#63), 2015; ISBN:9789543893584
Niemy świadek
- Phantom Press, 1993; ISBN:9788370755270
- Wydawnictwo Dolnośląskie, 1999; Seria z Gawronem; ISBN:9788370237233
- Hachette Polska: Kolekcja Hachette: Agatha Christie(62), 2003; ISBN:9788371847233
- Wydawnictwo Dolnośląskie, 2005; ISBN:9788373843820
- Wydawnictwo Dolnośląskie, 2007; Agata Christie - Królowa Kryminału; ISBN:9788373846883
- Wydawnictwo Dolnośląskie, 2013
- Wydawnictwo Dolnośląskie, 2013; Klasyka Kryminału; ISBN:9788324592982
- Wydawnictwo Dolnośląskie, 2014; Agatha Christie Kolekcja Kryminałów(6); ISBN:9788327151827
Audio

Martorul mut
- Excelsior Multi Press, 1994
- RAO, 2008; ISBN:9789731035611
- RAO, 2012; ISBN:9789731035611
- RAO, 2015; ISBN:9786066098731
- RAO, 2020; ISBN:9786063351648
Немой свидетель
- Немой свидетель; Книжный клуб "Клуб семейного досуга", 2006
Немой свидетель // Безмолвный свидетель
- *OMNIBUS*
Унверстэкае, 1996
- *OMNIBUS*
Центрполиграф: Полное собрание детективных произведений, 1997
- *OMNIBUS*
Центрполиграф: Весь Эркюль Пуаро, 2000
- *OMNIBUS*
Центрполиграф: Весь Эркюль Пуаро, 2002
- Безмолвный свидетель; Международный книжный дом
- *OMNIBUS*
Эксмо: Вся Кристи, 2008
- Эксмо, 2010
- Эксмо, 2013; Вся Кристи; ISBN:9785699414161
- Эксмо, 2013; ISBN:9785699635146
- Эксмо, 2015; Pocket book; ISBN:9785699785889
- Эксмо, 2017; Агата Кристи. Серебряная коллекция; ISBN:9785699997121
- Hachette, 2017; Коллекция Агата Кристи
- Эксмо, 2019; Агата Кристи. Любимая коллекция; ISBN:9785040997626
Audio

Немой свидетель
Эксмо, 2018
Dumb Witness
- АСТ, 2004
- КАРО, 2018; ISBN:9785992513240
Middle East & Asian covers
მდუმარე მოწმე
Sessiz Tanık // Ölüden Gelen Mektup / Ölüden Mektup Var / Aptal Tanık / Kaybolan Müşteri
- Ölüden Gelen Mektup; Ak Kitabevi, 1962
- Kaybolan Müşteri; Ak Kitabevi,
- Aptal Tanık; Kitapsarayı Yayınları, 1978
- Ölüden Mektup Var; Altın Kitaplar, 1979
- Ölüden Mektup Var; Altın Kitaplar, 1997; ISBN:9789754050384
- Altın Kitaplar, 2010; ISBN:9789752112445
- Altın Kitaplar, 2016; ISBN:9789752112445
Səssiz Şahid
- Qanun Nəşriyyatı, 2015; ISBN:9789952360479
- Qanun Nəşriyyatı, ; ISBN:9789952360479
לחישת המוות / העד האילם
- העד האילם
על ידי מזרחי
- לחישת המוות
1969
الشاهد الصامت /الشاهد الاخرس / الشاهد الأبكم
الشاهد الصامت
- JARIR Reader, 2014; ISBN:6281072079673
- المكتبة الثقافية
1998
- المكتبة الثقافية
1998
- دار ميوزيك
2000
- دار ميوزيك
- دار النجمة
الشاهد الاخرس
- دار عالم الثقافة
2015; ISBN:9789957363192
الشاهد الأبكم
- دار أسامة
2009
شاهد خاموش
شاهد خاموش
- Hermes books, A.P.1397; ISBN:9786004561372
- Hermes books, A.P.1391; ISBN:9789643637576
- Manaketab, A.P.1394; ISBN:9786008999288
الشاهد بی زبان
- فكر روز, A.P.1373
(Marathi) डम्ब विटनेस
- (Marathi) Padmagandha Prakashan
ගොළු සාක්ෂිකරුවා
- Sarasavi prakashana, 2014; ISBN:9789553101389
Saksi Bisu / Poirot Kalah Bertaruh
- Poirot Kalah Bertaruh; Mekar Jaya
- Gramedia, 1989; ISBN:9789796861095
- Gramedia, 2000; ISBN:9789796861095
- Gramedia, 2012; ISBN:9789792281286
- Gramedia, 2018; ISBN:9789792281286
พยานใบ้ / เหยื่อฆาตกรรม
พยานใบ้
- 1981(2524); ♦Rattanachai Lueangwongngam
- น้องใหม่, 1991(2534); ISBN:9789747372113
- สร้างสรรค์บุ๊คส์ ca: Tom Adams*; ♦Ratakorn
- (ePUB), 2013; ca: Tom Adams*
- สร้างสรรค์บุ๊คส์, 2006(2549); ISBN:9789749435342
เหยื่อฆาตกรรม
- ซิลเวอร์เซอร์เคิล, 1989(2532); ♦Rattanachai Lueangwongngam
- กาญจนา, 1986(2529); ♦Rattanachai Lueangwongngam
Nhân Chứng Câm
哑证人 / 沉默的證人 / 沉默的证人 / 死無對證 / 无言的证人
哑证人
- 群众出版社, 1981
- 贵州人民出版社, 1998
- 中国社会出版社, 2006
沉默的證人
- 遠景出版, 1986
- 遠流, 1988
- 風雲時代, 1990; ♦Sheldon Goldberg
- 遠景出版, 1992
沉默的证人
- 华文出版社(阿嘉莎·克莉丝蒂探案小说精粹), 1993
- 人民文学出版社(阿加莎·克里斯蒂侦探推理系列), 2008; ISBN:9787020065363
- 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18), 2014; ISBN:9787513314862
死無對證
- 遠流 2003
无言的证人
- 外文出版社(世界著名侦探小说), 1996; ISBN:9787119018553
もの言えぬ証人
- 早川書房, 1957, 1975(3rd); ハヤカワ・ポケット・ミステリ(312)
- 早川書房, 1977, 1990(28th); ハヤカワ・ミステリ文庫(HM1-20); ISBN:9784150700201; ca: Hiroshi Manabe
- 早川書房, 2003; クリスティー文庫(14); ISBN:9784151300141
벙어리 목격자
벙어리 목격자
- 해문출판사: 애거서 크리스티 미스터리(45), 1989
- 해문출판사, 2000; ISBN:9788938202451
- 해문출판사(애거서 크리스티 추리문학 베스트 20), 2004; ISBN:9788938201201
- 황금가지(애거서 크리스티 전집 32), 2007; IBSN:9788982737329
- 황금가지(애거서 크리스티 전집 완전판), 2016; ISBN:9788982737329