Recruited into MI5 against a backdrop of the Cold War in 1972, Cambridge student Serena Frome, a compulsive reader, is assigned to infiltrate the literary circle of a promising young writer whose politics align with those of the government, a situation that is compromised when she falls in love with him.

CIA agent Mason 'Mace' Brown joins forces with a rival German agent, a cutting-edge computer specialist and a Colombian psychologist when a top-secret weapon falls into the hands of a group of mercenaries. Together, the four women embark on a breakneck mission to save the world while staying one step ahead of a mysterious figure who's tracking their every move.

A reluctant ex-spy with demons of her own, Elinor finds herself facing down one of the most dangerous organized crime gangs in London, ultimately exposing corruption from Scotland Yard to the highest levels of government. The private, quiet 'Miss White' as Elinor is known, lives in a village in rural Kent, England, and to her fellow villagers seems something of an enigma. Well she might, as Elinor occupies a 'grace and favor' property, a rare privilege...