The Sign of Four
| Book | The Sign of the Four |
| Publisher | Penguin Group |
| Imprint | Penguin Books |
| Publisher Series | The Penguin Sherlock Holmes Collection |
| Series | Sherlock Holmes |
| Typeset by | Rowland Phototypesetting Ltd |
| Printed by | Clays Ltd, St Ives plc |
| Copyright Holder | The Estate of Sir Arthur Conan Doyle |
| Format | Paperback |
| Language | English |
| Location | Great Britain |
| Republished | 1982 |
| Reissued | 2011 |
| Pages / Font | 151 pages / 11/13 pt PostScript Monotype Dante |
| Barcode | 9 780241 952962 |
| ISBN | 978-0-241-95296-2 |
| Printer's Key | 1 |
| Price | U.K. £6.99 / CAN. $10.99 |
| Series Number | 2 |
| Chapters | Contents 1 The Science of Deduction 2 The Statement of the Case 3 In Quest of a Solution 4 The Story of the Bald-headed Man 5 The Tragedy of Pondicherry Lodge 6 Sherlock Holmes Gives a Demonstration 7 The Episode of the Barrel 8 The Baker Street Irregulars 9 A Break in the Chain 10 The End of the Islander 11 The Great Agra Treasure 12 The Strange Story of Jonathan Small |
| Notes | First published 1990 Published in Penguin Books 1982 Reissued in this edition 2011 Copyright The copyright holders of the Sir Arthur Conan Doyle works, reproduced by kind permission of Jonathan Clowes Ltd London, on behalf of Andrea Plunket, Trustee & Administrator Typeset by Rowland Phototypesetting Ltd, Bury St Edmunds, Suffolk Printed in England by Clays, St Ives plc |
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