London, 1760. Jamie Fraser, a paroled Scottish prisoner-of-war, is desperately trying to rebuild his life in the tranquil Lake District. Close enough to watch over the son he can never claim, he's haunted by dreams of his lost wife and the shadows of his past.

But peace is elusive. When an old comrade arrives, still clinging to the embers of rebellion, Jamie resists the call to arms. He's sworn off politics and war. Yet fate has other plans.

Lord John Grey, an English officer with his own troubled past, appears with a summons Jamie cannot ignore. In possession of explosive documents that expose corruption at the highest levels, Lord John needs Jamie's help. Reluctantly, they become uneasy allies.

Their journey takes them to Ireland—a land of dark castles, buried secrets, and whispers of the dead. As danger closes in, Jamie and Lord John delve deeper into a web of deceit and betrayal.

What deadly truths lie hidden in the mists of Ireland? Will Jamie be forced back into a war he's vowed to leave behind?