Wes Craven executive produced this made-for-TV movie, but he gets more credit for it than he's probably due. The story is about a woman who becomes deathly afraid of heights after her sister falls to her death in a freak accident. She joins a psychologist's controversial support group, but then a series of murders occurs. The killer may be human, but there's also good reason to believe it might be the dead sister, come back to haunt. The story is entertaining enough, but it's bogged down with an overuse of dreamlike sequences and spooky off-screen whispering.