Anxious about her approaching wedding and desperate to clear her mind, Lindsey Holland decides to leave her native Texas and spend the summer working for friends who manage a Christian coffee house in Oregon. Staying at the seaside mansion of Mrs. Katherine Cutler, a reclusive widow, Lindsey faces recurring nightmares of a woman imprisoned in a lighthouse and disturbing encounters with spectral beings that haunt the mansion's dark chambers and twisting corridors. At first, she dismisses the experiences as pre-wedding jitters, but, as the intensity grows, she fears that she may be in the grip of supernatural forces beyond her understanding or, perhaps even more terrifying, descending into madness. A young married couple, a jealous fiance, an aspiring filmmaker, and a troubled teen who claims to have psychic powers all join her on a harrowing journey through the twisting mazes of the heart to confront the dark secret that has held Mrs. Cutler prisoner for over sixty years."