Does this paranormal mystery deliver scares worth losing sleep over? Its panic-stricken opening certainly suggests so.

One Eye Open begins with a tense sequence in which a frightened woman escapes to her car and calls the police while an intruder remains inside. The urgent score and her delayed frenzy suggest a home-invasion thriller, but the film soon pivots to a supernatural story about Samantha, a recent psychology graduate staying in her grandfather’s spacious, memory-filled home.  

The house is the film’s greatest strength. Its bright, traditional interiors and thoughtfully arranged décor are revealed through careful camerawork, while creaking doors, shadowed closets, and fleeting ghostly figures gradually unsettle its inviting atmosphere. Samantha’s childhood memories and tender bond with her grandfather (a former doctor now living with Alzheimer’s disease) give the story emotional weight. Her affection for him is one of the few consistently sincere elements.

Unfortunately, the movie fails to build on that foundation. Multiple break-ins, a suspicious rideshare driver, family secrets, and even a possession soon crowd the plot. Any one of these ideas could sustain an unsettling exploration of grief, memory, and inherited trauma, but together they create a disjointed narrative. Each new revelation raises more questions than dread, while the ghosts’ vague rules prevent them from feeling truly threatening or meaningful.  

The uneven performances further weaken the suspense. Sam often reacts to danger with such detachment that the danger becomes difficult to accept. She shows convincing emotion when her grandfather is involved, yet responds to intruders, bodies, and a slew of bound men in the basement with puzzling calmness. Her abrupt transformation into a commanding interrogator is similarly unconvincing. Several exchanges—particularly the confrontation between Samantha and the female burglar—feel awkwardly staged rather than volatile, leaving the actors stranded between earnest supernatural drama and campy thriller.  

Eventually, cyclical structure returns to the opening 911 call, the storm-darkened house occasionally generates atmosphere, and the idea of deceased family members acting as Samantha’s imperfect protectors has potential. Yet the screenplay repeatedly explains, reverses, or complicates events instead of allowing suspense to accumulate. Even moments that should be frightening such as an intruder climbing the stairs, suspicious wet footprints leading to the basement, or a friend overtaken by the spirit of Sam’s grandma Jane, lose impact due to the characters’ reactions rarely matching the horror around them.

By the climax, the ghosts function less as haunting presences than as convenient rescue devices. A last-minute intervention by the police and an oddly labored reminder to perform CPR make the resolution feel contrived, while the final suggestion that Samantha will simply continue sharing the house with her spectral family raises issues which One Eye Open has not adequately explored. What might have been a poignant ending instead feels like an escape from the narrative complications the story created.