The Scandal At Bletchley (Hilary Manningham-Butler Book 1)

Set in 1929 during a gathering at Bletchley Park to celebrate MI5's 20th anniversary, this story follows a group of former and current intelligence officers, each with their own secrets. Among them is Sir Hilary Manningham Butler, a woman who has spent her life disguising her true identity, and her presence at the event sparks tension when her secret is threatened. As the weekend unfolds, the characters confront issues that could have serious repercussions for everyone involved.