Joel just wants to qualify as an architect and get free from the gnawing pressure of student debt. This seems a distant dream, until he steals a bejewelled square of elaborate ironwood from an unearthed corpse.
In the far north of Scotland, local veterinarian Nat possesses an heirloom from her Russian aristocrat ancestor: a beautifully-crafted jigsaw puzzle missing its centre.
Combine their pieces and the two can share a quarter-million-pound windfall.
But completing the puzzle fulfils another purpose. Something from the worst depths of the occult.
