SPY/COUNTERSPY

by Duško Popov, Ewen Montagu (Foreword), Anthony Summers (Introduction)

365 pages, Paperback

Published July 1, 1974

About the author

Dušan "Duško" Popov (born in Titel, Austria-Hungary, now Serbia) was a double agent working for the British intelligence agency MI6 during World War II under the code name "Tricycle" and for the German intelligence agency Abwehr under the code name "Ivan".