Dr. Corinne Cabot is a successful ER physician who lives in a charming house in the suburbs of Chicago and is married to a handsome husband. But appearances can be deceiving-and what no one can see is Corinne's dark past. Troubling gaps in her memory mean she recalls little about a haunting event in her life years ago that changed everything. She remembers only being in the house the night two people were found murdered. Her father was there, too. Now her father is in prison and she hasn't been in contact in years. Repressing that terrifying memory has caused Corinne moments of paranoia and panic. She writes her suspicions off to fatigue, overwork, anything to explain what she can't accept --that her life really isn't what it seems.