Two years ago, Hannah discovered her next-door neighbor was a serial killer. Everyone blamed her for not saying something sooner. For not noticing. The sounds in the night. The women who went into the house and never came out.

They accused her of covering for him. Of choosing to ignore what she saw and heard. The killer blamed her for exposing his fun, and his letters from prison promise revenge.

Now Hannah is in a creaky old house in a new town. In a new neighborhood. And with a new last name. She's hoping the neighbors won't know she's the one. The one with guilt on her conscience.

These days she seems extra forgetful. Her imagination running wild. Is the handsome, smiling neighbor safe? Did she leave the shower curtain like that?

Above all she knows, he's coming for her. It's only a matter of time.