Copyright

      Published by COLLINS CRIME CLUB

      An imprint of HarperCollinsPublishers Ltd

      1 London Bridge Street

      London SE1 9GF

       www.harpercollins.co.uk

      First published in Great Britain by The Crime Club by W. Collins Sons & Co. Ltd 1921

      Copyright © Estate of Freeman Wills Crofts 1921

      Introduction © Estate of Freeman Wills Crofts 1946

      Cover design © HarperCollinsPublishers Ltd 1921, 2016

      A catalogue copy of this book is available from the British Library.

      This novel is entirely a work of fiction. The names, characters and incidents portrayed in it are the work of the author’s imagination. Any resemblance to actual persons, living or dead, events or localities is entirely coincidental.

      All rights reserved under International and Pan-American Copyright Conventions. By payment of the required fees, you have been granted the non-exclusive, non-transferable right to access and read the text of this e-book on screen. No part of this text may be reproduced, transmitted, down-loaded, decompiled, reverse engineered, or stored in or introduced into any information storage and retrieval system, in any form or by any means, whether electronic or mechanical, now known or hereinafter invented, without the express written permission of HarperCollins.

      Source ISBN: 9780008190521

      Ebook Edition © September 2016 ISBN: 9780008190538

      Version: 2016-08-09