A woman who has just experienced a traumatic incident is unnerved by a haunting knocking sound from upstairs in her new apartment building. As the noises become more desperate and increasingly sound like cries for help, she confronts her neighbours, but it seems no one else can hear them. In an unsettling quest for truth, Molly soon realizes that no one believes her, and begins to question if she even believes herself – a realization that is perhaps even more chilling.

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