The Dark Invader Wartime Reminiscences of a German Naval Intelligence Officer

First published by Lovat Dickson, Ltd, London in January 1933 Second Impression February 1933 Third Impression March 1933 Fourth Impression July 1933 Fifth Impression Autumn 1933 Cheap Edition July 1934 Reprinted June 1935 Reprinted December 1936

Published in Penguin Books September 1936 Reprinted January 1937 Reprinted May 1937 Reprinted September 1937 Reprinted February 1938

Published in America by the Macmillan Company of New York

Made and printed in Great Britain for Penguin Books Limited by Purnell and Sons, Ltd. Paulton (Somerset) and London