An SOE agent parachutes into Nazi-occupied Netherlands and walks straight into a trap, the opening move in what becomes one of British intelligence's worst wartime failures. This episode of History Hit's Secret War series reconstructs how German counterintelligence, led by Abwehr officer Hermann Giskes, captured Dutch resistance operatives one by one and turned their captured radio sets back on London, feeding false reports to handlers who had no idea their network had been compromised. Archival photographs, wartime maps, and expert interviews trace how the deception, later known as the Englandspiel, ran for months while agent after agent parachuted into the same ambush. The film lays out the tradecraft failures on the British side, the coded warnings that went unheeded, and the human cost for the men sent into a country the Germans already controlled. It is a study of how easily a spy network can be turned against itself, and how long it took London to notice.