When Kay returns to her hometown, there is a sinister letter promising a week of terror and her own murder on Monday.

Seventeen-year-old Kay left her sleepy hometown after the devastating death of her friend, Ivy. But when her parents go on holiday without her, Kay is forced to come back to stay with her cousin. And her return comes with a bang. Because when Kay arrives, it's to find an anonymous letter on her bed.

The letter tells her that there will be a thrill on Tuesday, a wreckage on Wednesday, treachery on Thursday, a fire on Friday, sabotage on Saturday, a stabbing on Sunday - and her murder on Monday.

And if Kay can't figure out who is behind the threats, the worst day of the week is about to get deadly.