Don't Look Down

One fateful day, as Carla's boyfriend snapped photos, Carla's sister fell through a loose railing and plummeted over a cliff to a tragic death. Ever since, Carla has been haunted by visions of her angry sister blaming her. As a result, Carla has developed an unnatural and paralyzing fear of heights. To overcome her acrophobia, she joins a support group. But when the support group members start getting killed one by one, Carla begins to suspect that her sister's accident was no accident - and she has been the real target all along. (official distributor synopsis)