Published by COLLINS CRIME CLUB

      An imprint of HarperCollinsPublishers Ltd

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      London SE1 9GF

       www.harpercollins.co.uk

      First published in Great Britain 1913

      Published by The Detective Story Club Ltd

      for Wm Collins Sons & Co. Ltd 1929

      Introduction © Tony Medawar 2015

      Cover design © HarperCollinsPublishers Ltd 1929, 2015

      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: 9780008137175

      Ebook Edition © August 2015 ISBN: 9780008137182

      Version: 2015-08-17