Hilary Manningham-Butler Books in Order

At MI5's twentieth-anniversary gathering in 1929, former agent Hilary Manningham-Butler faces exposure of her lifelong disguise as a man. A guest's threat turns the weekend at Bletchley Park into a dangerous collision of secrets and blackmail.

Hilary boards a German airship bound for Brazil to recover secret documents stolen from Scotland Yard. Hoping the mission will rescue her stalled intelligence career, she instead finds passengers with hidden identities and little assurance of reaching Rio alive.

Hilary Manningham-Butler expects a quiet stay in Central America in September 1931. In Belize, however, the promise of respite disappears when something from her past catches up with her in this short adventure following The Devil's Brew.

Hilary takes a passport-control post in Guatemala after her predecessor's apparent suicide and embezzlement. A friend's suspicions lead her to a remote coffee plantation, where another questionable death forces her into an investigation she hoped to avoid.

Fleeing a letter-bomb scare in New York, Hilary sails for Southampton aboard the Galitia. Anonymous letters exposing first-class passengers' secrets soon circulate, and a hoped-for escape becomes another perilous journey as accusations turn toward violence and murder.

Investigating possible foreign funding of Britain's fascist movement sends Hilary to Rome in 1934. A suspicious death at a club member's villa brings her into conflict with an Italian police force whose political masters cast doubt on its pursuit of justice.