In the years leading up to the outbreak of the
First World War, he was involved in a variety of failed commercial endeavours, living for a time in
Bucharest, hoping to make money in the oil industry. Back in London with no money, he offered his services to the British government as a spy. When he was rejected he went to the
Netherlands and made contact with the
Germans, who employed him as a double agent. Returning to England, he narrowly escaped arrest, leaving for the United States in 1915, where he made contact with the German military attaché,
Franz von Papen. Papen was instructed by
Berlin to have nothing to do with him, whereupon Trebitsch sold his story to the
New York World Magazine, which published it under the banner headline "Revelation of I. T. T. Lincoln, Former Member of Parliament Who Became a Spy". His book
Revelations of an International Spy was published by
Robert M. McBride in New York in 1916. The British government, anxious to avoid any embarrassment, employed the
Pinkerton agency to track down Trebitsch-Lincoln. He was returned to England—though not on a charge of espionage, which was not covered by the Anglo-American
extradition treaty, but of fraud. He served three years in
Parkhurst Prison on the
Isle of Wight, and was released and deported in 1919. His British nationality was revoked by
the Home Secretary on 3 December 1918. == Germany and Austria ==