The Murder HypothesisHow do you catch a murderer without knowing who the victim is? Science obsessed Graces fresh start with her dad in Devon is derailed when the smart speaker in their new house comes alive at midnight and says: Im 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