Adeline Evans has recently moved into a home for the elderly. A safe space, where she can be cared for.
When she begins to receive cryptic and threatening notes, she is certain that someone is out to get her.
But the residents are warned against listening to a woman who is losing her memory. It would seem Adeline is tormented by the secrets in her past, and that the menace is all in her mind.
Until danger comes down the corridor and starts knocking in the night...