When Alex Easton travels to Gallacia as a favour to their friend, Britain's foremost mycologist Miss Potter, they find their home empty, the caretaker dead, and the grounds blanketed by an uncanny silence. The locals won’t talk about what happened to the caretaker. None of them will set foot on the grounds.

Whispers of an unearthly breath-stealing creature from Gallacian folklore don’t trouble practical Easton. But as their sleep is increasingly disturbed by vivid nightmares and odd happenings perplex the household, they are forced to confront the possibility that there is more to the old folk stories than they'd like to believe.

A dark shadow hangs over Easton's house. And nobody will rest until justice is done.