Sixteen years have passed since Grace was locked up, at the age of 16, for the cold-blooded murders of her employer and his housekeeper/lover. Her alleged accomplice in the crimes, James McDermot, paid the extreme sentence of the law and was hanged on November 21, 1843.
But some thought Grace was innocent, and her sentence has been commuted to life imprisonment. After a spell in the Lunatic Asylum she now claims to have no memory of the murders, and so Dr Simon Jordan tries to wake the part of Grace's mind which lies dormant. But what will he find?