Rent Doctor Who: The War Games (1969)

The "Tardis" has materialised in a world of trench warfare, barbed wire and poison gas: the Western Front, 1917. In the chaos and paranoia of the First World War, the Doctor and his companions are separated from their ship, captured and court-martialled. The death sentence is swiftly pronounced. But all is not as it seems. As the Doctor finds himself increasingly out of his depth and facing impossible odds, the only solution is the truly unthinkable. He must seek help from those he most fears - his own people, the Time Lords...