1920s England. Sarah Piper's lonely, threadbare existence changes when her temporary agency sends her to assist an obsessed ghost hunter who has been summoned to investigate the spirit of the nineteen-year-old maid Maddy Clare, who haunts the barn where she committed suicide. Maddy hated men in life, and will not speak to them in death. Sarah is unprepared to confront an angry ghost - and Maddy's ghost is no hoax. She's real, she's angry, and she has powers that defy all reason. Now, Sarah must discover who Maddy was and what is driving her desire for vengeance - before she destroys them all.
