1689. Scotland is in the grip of Jacobite fever. Bonnie Dundee leads a Highland Army looking to crush the government and restore James Stuart as King.

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Meanwhile, in the dark streets of Edinburgh, there are even darker goings-on. A gruesome discovery near the city's quarry takes investigative advocate John MacKenzie and side-kick Davie Scougall on a dangerous journey through the criminal underworld and clandestine clubs of the old capital.