Have you ever wanted to be a better version of yourself? Eve Dawson would do anything to be a better mother. So when a pill promises to replace sleep with hours of extra productivity every day, she takes it. Within days, Eve is renovating the house at dawn, doing yoga before breakfast, and cooking from scratch. She is finally becoming the mother her daughter deserves. Within weeks, she is losing her mind. Eve doesn't remember writing the notes left in Jada's room overnight. Things go missing, or seem to have moved in the house. She just can't explain it.

And when Jada collapses at school, Eve realises with cold dread: something is very wrong. Is someone else in Eve's home at night? She and her daughter might be in real danger, and Eve can no longer trust the one person she needs most: herself. This propulsive and deeply moving psychological thriller, perfect for fans of Gillian McAllister, Audrey Audain and A.J. Finn, will have you reading late into the night - and then sleeping with the lights on.