A Portuguese national’s recruitment to spy on British war production began with a betrayal of his father’s employer and ended in a Security Service file kept secret for decades.
Nazi intelligence officers were deceived by a sprawling network of imaginary spies and curated falsehoods while MI5 case officer Thomas Harris plotted to keep the lie hidden.
German military intelligence trusted a fictional spy network while MI5 fed them carefully crafted lies to steer the High Command toward incorrect conclusions.
German intelligence was blinded by a phantom spy network while the Security Service used a clinical ledger to verify that the enemy believed every strategic lie.