In the Wanamaker Playhouse’s candlelit space Jon Bausor’s clever set divulges sinister built-in drawers of files. Conspirators plotting treason discover the hard way that a mole is privy to their plans. Religious refugees fleeing to England in the wake of massacres on the continent find themselves unwelcome in isolationist Britain. Late 16th-century London feels a lot like a John le Carré thriller set right now. And indeed playwright Anders Lustgarten owes his title to le Carré, who wrote “espionage is the secret theatre of our society”.