- 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
- Le Masque
- Le Masque
- Le Masque, 1991
- 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
- Le Livre de Poche; 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, 1985
- Sijthoff, 1983
- Luitingh-Sijthoff/Poema, 2001; ISBN:9789024511822
- HLN, 2015
- Overamstel Uitgevers, 2015; ISBN:9789048823840
- Overamstel Uitgevers, 2015; ISBN:9789048823253
Der ballspielende Hund
- Scherz, 1959
- Scherz, 1960
- Scherz, 1961
- Scherz, 1970
- Scherz, 1975
- Scherz, 1975
- Scherz, 1979
- Scherz, 1986
- Scherz, 1987
- Scherz, 1996
- Scherz, 1993
- Scherz, 1991; ▶ Art
- Loewe, 1994
- Scherz, 1996
- Scherz, 1998
- Scherz, 2000
- Weltbild
- Scherz, 1998
- Edito Service, 1982
- Hachette, 2009
- Atlantik, 2015; ISBN:9783455650549
- Fischer, 2006
Audio


- Der Hörverlag, 2019
Northern Europe covers
Det stumma vittnet
- Bonniers, 1961
- Zebra(#194), 1965
- Bonniers, 1978
- Bonniers, 1987
- Bookmark Förlag(e-bok), 2014; ISBN:9789175471440
- Stockholm Text, 2015; ISBN:9789188171696
Anklagerens Vidne / Stumt vidne
- Hasselbalchs, 1938
- Carit Andersens, 1961
- Forum Krimi, 1976
- Rosenkilde & Bahnhof, 2014; ISBN:9788771287776
Audio



Det tause vitne
- Aschehoug, 1976
- Aschehoug, 1984
- Aschehoug, 1987
- Aschehoug, 2002
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
- Žuvėdra, 1996
- Sirokas, 2014; ISBN:9786098057157
Southern Europe covers
Due mesi dopo
- I Libri Gialli(#198), 1938
- I classici del giallo Mondadori(#236), 1976
- I Classici del Giallo(#557), 1988; ca: Carlo Jacono
- Mondadori, 1984; ISBN:978-8804172239; ♦Sheldon Goldberg
- Mondadori: Oscar scrittori moderni, 1996; ISBN:9788804414124
- Mondadori: Oscar scrittori moderni, 2003; ISBN:9788804510000
- I Classici del Giallo(#1147), 2007
- Hachette Fascicoli, 2005
- RBA, 2008
- Mondadori, 2010; ebook; ISBN:9788852014932
- Mondadori, 2019; Oscar gialli; ISBN:9788804709824
- RCS Corriere della Sera, 2015
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
- Molino, 1985; ISBN:9788427298552
- Círculo de Lectores, 2004
- Molino, 2001
- RBA (EPUB, 2013)
- Círculo de Lectores
- Espasa, 2021; ISBN:9788467059809
Testimoni mut
- La Llar del Llibre(#38), 1990
- Columna, 1998
- EDICIONS PROA S.A., 2001; ISBN:9788482564814
Poirot Perde uma Cliente / Testemunha muda
Poirot Perde uma Cliente
- Nova Fronteira, 1980; ISBN:9788520903285
- Record, 2000; ♦Emilaine
- L&PM Pocket, 2010; ISBN:9788525420855
- HarperCollins Brasil, 2017; ISBN:9788595080027
- Record; ISBN:9788511514728
- 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
- Narodna knjiga - Alfa (Beograd), 1997
- Narodna knjiga - Alfa (Beograd), 2002; ♦Svetlana Andjelic
- 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
- Knižní klub, 2006; ISBN:9788024217819
- Kalibr, 2019; ISBN:9788076171305
Audio

- OneHotBook, 2019
A kutya se látta / Náma tanú
- Magyar Könyvklub, 1993; ♦Czibóka Tamas
- Aquila könyvkiadó, 2006; ♦Horváth Tamás
- Európa Könyvkiadó, 2012; ISBN:9789630794053
- Helikon Kiadó, 2019; ISBN:9789634793120
Audio

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

Martorul mut
- Excelsior Multi Press, 1994
- RAO, 2008
- RAO, 2012; ISBN:9789731035611
- RAO, 2015; ISBN:9786066098731
- RAO, 2020; ISBN:9786063351648
Безмовний свідок
- Книжный клуб "Клуб семейного досуга", 2006
Немой свидетель // Безмолвный свидетель
Немой свидетель
- *OMNIBUS*
Унверстэкае, 1996
- *OMNIBUS*
Центрполиграф: Полное собрание детективных произведений, 1997
- *OMNIBUS*
Центрполиграф: Весь Эркюль Пуаро, 2000
- *OMNIBUS*
Центрполиграф: Весь Эркюль Пуаро, 2002
- *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
- Эксмо, 2019; Агата Кристи. Любимая коллекция; ISBN:9785040997626
Audio

Немой свидетель
Эксмо, 2018
Безмолвный свидетель
- Международный книжный дом
Dumb Witness
- АСТ, 2004
- КАРО, 2018; ISBN:9785992513240
Middle East & Asian covers
მდუმარე მოწმე
Ölüden Gelen Mektup / Ölüden Mektup Var / Aptal Tanık / Sessiz 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
- Sessiz Tanık, Altın Kitaplar, 2010
- Sessiz Tanık, 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
- فكر روز, A.P.1373
(Marathi) डम्ब विटनेस
- (Marathi) Padmagandha Prakashan
ගොළු සාක්ෂිකරුවා
- Sarasavi prakashana, 2014; ISBN:9789553101389
Saksi Bisu / Poirot Kalah Bertaruh
- Gramedia; ISBN:9789796861095
- Gramedia, 2000; ISBN:9789796861095
- Gramedia, 2012; ISBN:9789792281286
- Gramedia, 2018; ISBN:9789792281286
- Poirot Kalah Bertaruh, Mekar Jaya
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
- ハヤカワ・ポケットミステリ, 1957, 1975(3rd)
- ハヤカワ・ミステリ文庫, 1977, 1990(28th); ca: Hiroshi Manabe
- クリスティー文庫s, 2003; 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