Oxford, England, 1951. The Honorable Ginevra Bishop is following in her mother’s footsteps by studying at Oxford, eager to prove she’s more than a debutante. Sidney Braithwaite likes brooding, Latin and ignoring his nightmares. He’s determined to forge a new life for himself at Oxford, far from his childhood mining village and free from memories of the war. Though Gin and Sidney have little in common, the British Security Service is keen to unite her charm with his espionage experience. There’s a Soviet spy at the university, and the agent tracking them down was poisoned. MI5 wants Gin and Sidney to pick up the trail and identify the informant before more sensitive information is compromised.