Insomnia

In the twisted, mind-bending thriller written by the best-selling author of Behind Her Eyes, Emma Averell fears that she is slowly losing her mind, much like the mother she tried so hard to leave behind.

Emma Averell is happy with her life, but it wasn't always this way. She has a successful legal job, two gorgeous kids, and a great husband who stays at home. Due to a terrible event involving their mother, Emma and her elder sister were placed in foster care when she was only five years old. Emma can only recall their mother as a monster; her sister recalls a period when their mother was kind and "normal." And that monster emerged right around their mother’s fortieth birthday, the same age Emma is approaching now.

Emma has always kept her early tragedy a secret because she fervently wants to preserve her prosperous present apart from her past. But then, one of her mother's first symptoms was her inability to go asleep, and she started losing time throughout the day. Is this crazy ingrained in her, as her mother suggested? Could her hazy, agitated mood cause her to harm her family? Or is she really starting to go crazy?