The Three Hostages by John Buchan

Now a settled family man, former soldier Richard Hannay is drawn back into danger when three prominent people are abducted by a secret criminal network. Tasked with tracking a shadowy mastermind who uses psychological manipulation and modern criminal techniques, he pursues a trail of clues across Britain, confronting deceit, betrayal and hidden identities. Combining tense detective work, daring rescues and an exploration of the uneasy peace after war, the story follows Hannay as he dismantles the conspiracy and struggles to protect those he loves.

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