When Zeb Wyckham is summoned to a wealthy relative's remote Gothic manor, he is horrified to find all the people he least wants to see in the world: his estranged brother, his sneering cousin, and his bitter ex-lover Gideon Grey. Things couldn't possibly get worse.

Then the master of the house announces the true purpose of the gathering: he intends to leave the vast family fortune to whoever marries his young ward, setting off a violent scramble for her hand. Zeb wants no part of his greedy family—but when he tries to leave, the way is barred. The walls of Lackaday House are high, and the gates firmly locked. As the Dartmoor mists roll in, there's no way out. And something unnatural may be watching them from the house's shadowy depths…