| Author | John Wyndham |
| Publisher | Penguin Group |
| Imprint | Penguin Classics |
| Publisher Series | Penguin Modern Classics |
| First Published by | Michael Joseph |
| Introduction by | Brian Aldiss |
| Cover Art by | Andy Bridge |
| Copyright Holder | John Wyndham |
| Copyright Holder (Introduction/Prologue) | Brian Aldiss |
| Copyright Holder (Cover/Jacket Art) | Andy Bridge |
| Printed by | Clays Ltd, St Ives plc |
| Format | Paperback |
| Language | English |
| Location | Great Britain |
| Copyright | 1968 |
| Republished | 1970 |
| This Edition Published | 2010 |
| Pages / Font | 153 pages |
| ISBN | 978-0-141-19149-2 |
| Barcode | 9 780141 191492 |
| Price | U.K. £8.99 |
| Printer's Key | 1 |
| Notes | Penguin Classics Published by the Penguin Group First published by Michael Joseph 1968 Published in Penguin Books 1970 Published in Penguin Classics 2010 Copyright © John Wyndham, 1968 Introduction copyright © Brian Aldiss, 2010 Printed in England by Clays Ltd, St Ives plc |