It will be unnecessary to detail his past activities, which almost invariably he carried out successfully and without giving rise to suspicion, even at times when the espionage mania was at its height, and Britons were being arrested and detained on suspicion for various slight acts of indiscretion that they had committed in pure ignorance. A man might in all good faith take photographs of a place of national interest; an artist might make a sketch in the grounds of his own house--and be promptly haled before the magistrates and fined. The "powers-that-be" seem to be blind to the fact that a trained spy would not attempt to use a conspicuous camera. An instrument of the vest-pocket type would serve his purpose equally well and with little chance of detection. It was the Kaiser's manifesto relating to the capture of the "dangerous" Peter Barcroft that turned the course of von Eitelwurmer's activities in the direction of Ladybird Fold--not wholly for the sake of the pecuniary reward, but with the idea of gaining additional kudos at the hands of his Imperial master. The spy had little difficulty in tracing Barcroft's movements from the time he vacated Riversdale House in the village of Alderdene. The information that his quarry had removed to Tarleigh in Lancashire he had communicated to Berlin, but owing to a delay the news was not in time to prevent the Hun airman, von Bülow und Helferich, making his ill-fated flight to the south-eastern part of England. Von Eitelwurmer's method of communicating with Berlin was simplicity itself, and as such ran less chance of detection than if he had resorted to elaborate and intricate means. He would obtain catalogues from manufacturers living in the same town in which he had taken up his temporary abode. On the pages he would write with invisible ink--or even milk or lemon, both of which when dried naturally show no trace of their presence--his reports, taking the additional precaution of using a cipher which he could retain mentally and thus do away with the risk of incriminating documents. The next step was to get possession of a printed wrapper bearing the name and address of the firm in question. The catalogue, enclosed in the wrapper, was then sent to a pseudo Englishman living in Holland, who, almost needless to say, was a German agent. These reports were then sent in duplicate, one preceding the other in the space of three days. Fortunately or otherwise--according to the standpoint taken by interested parties--the first secret dispatch related to the movements of Peter Barcroft was lost in a Dutch mail-boat that a German submarine had sent to the bottom. The second resulted in Ober-leutnant von Loringhoven being dispatched on a Zeppelin raid with the primary intention of kidnapping the proscribed Englishman.