Author:  Wishart, Sarah 
Interest age: from c 13 years
Published on 7 November 2024 by HarperCollins Publishers (Harper Fire) in the United Kingdom.

Paperback | 480 pages
130 x 198 x 38 | 416g
The gripping new YA thriller from the author of FOUR GOOD LIARS, and the perfect read for fans of A GOOD GIRL’S GUIDE TO MURDER.
  How do you catch a murderer without knowing who the victim is?
  Science-obsessed Grace’s fresh start with her dad in Devon is derailed when the smart speaker in their new house comes alive at midnight and says: I’m going to murder you.
 And after Grace begins to investigate, she uncovers four mysterious deaths – all supposedly accidents – that are linked to the device.
 But only Grace knows that one of those deaths was actually a murder – and now she must identify both the victim and the killer, using the methodology of a chemistry experiment … before she ends up dead herself.
 The gripping new YA thriller from the author of FOUR GOOD LIARS