This film is based on a two sentence premise, which is; A girl heard her mom yell her name from downstairs, so she got up and started to head down. As she got to the stairs, her mom pulled her into her room and said "I heard that, too." It's used to very creepy effect here, as it's clearly an apparition, yet does such a convincing impression of her mother that she could be mistaken for her mother, except there's a subtle impression of threat in her voice that's delivered as though in innocence.
The storytelling though is muddled and incoherent, with the girl going out on the banister to investigate her mother's calling her, before we see the phantom spectre come out in the background and pull the girl back into her room, accompanied by a cheap jump scare. The next shot, we see her in her room with her mother, which lets us know that it wasn't a ghostly apparition, but in fact her mother pulling her back into her room, despite that being contradicted by the previous scene. This kind of nonsensical storytelling continues as we get further into the film, with scene transitions that aren't properly accounted for and leave you feeling confused, but not in a way that feels deliberate or craftily executed, but clumsy and rushed.
Seeing the monster depicted is never going to be as terrifying as what our imagination conjure up based on hints of the monsters presence, but this film does a reasonably satisfying job with the big reveal given that, and ends in suitably macabre and unsettling fashion, brutally stripping away our notion of childhood security.
