Sixteen years have passed since teenaged Grace was locked up for the cold-blooded murder of her employer Thomas Kinnear and his lover, Nancy Montgomery. Saved from the gallows where her alleged accomplice was hanged, Grace claims to have no memory of the events which changed her life for ever. Dr Simon Jordan is an expert in the field of amnesia. His objective is to unlock the dormant part of Grace's mind and discover the truth behind one of the most enigmatic and notorious women of all time. Was Grace an unwitting accessory, or a cold-blooded killer?