A skin-prickling, unnerving viewing experience, Parker Finn’s first feature is an astonishing demonstration of film-making restraint.

It's not the most original film of recent years... [but] it uses a familiar box of tricks rather well.

Finn uses the strength of his conceit to turn the screws, raising tension through the Ring-like timeline Rose faces and the sheer relentlessness of her supernatural tormentor.

I loved this movie. It has depth, it’s well crafted, and it features excellent performances from its cast.