Tinker Tailor Soldier Spy

(2011) BBC4, 9pm

Gary Oldman (above) stars as George Smiley in Tomas Alfredson’s thrilling take on John le Carré’s Cold War novel. The retired Smiley is brought back into the British secret service after the death of a colleague who claimed to have evidence of a deep-cover Russian agent. But who is the mole? ★★★★★