Leah is in love. It should be the happiest summer of her life, but she can't help feeling lonely with Jake's attention divided between her, his ex-wife and his young son. As insomnia sets in, the walls of their new basement flat feel as if they're closing in around her.

Until she meets her upstairs neighbour, Anton, who has recently moved back in after a long absence from the street. He's a sympathetic ear when Jake can't be, and even though others on the street seem strangely hostile towards him, Leah soon comes to rely on Anton and their secret conversations in the night.

Leah has no idea that nineteen years before, Anton was convicted of killing his wife. A wife who looked a little bit like Leah. He has always said he didn't do it.

Is Leah his redemption? Or is she befriending a killer intent on luring her closer and closer?