Set over 24 hours in London, it is a stripped-back thriller about a man who goes on a bold and reckless journey of self-liberation.

As the enormously popular mystery series returns, World War II is over, but the Cold War simmers in 1946 London. DCS Christopher Foyle has retired from police work when Britain's secret intelligence service compels him to join its ranks. Reunited with his former colleague, newlywed Sam Wainwright, Foyle faces new-but no less deadly-threats in the world of spies and counterintelligence.

Returning for a three-episode encore, Foyle finds his longed-for retirement interupted by cases involving international intrigue, military racism, and an accused traitor all to willing to go to the gallows.

World War II is over, but the Cold War simmers in 1946 London. DCS Christopher Foyle has retired from police work when Britain's secret intelligence service compels him to join its ranks. Reunited with his former colleague, newlywed Sam Wainwright, Foyle faces new-but no less deadly-threats in the world of spies and counterintelligence.