News that the body of a recently murdered prostitute–stabbed repeatedly and dumped on Georgia's Shelter Island–has been identified as Shannon Randall stuns the FBI, particularly special agent Dorsey Collins. Twenty-four years ago, nineteen-year-old Eric Louis Beale was convicted and later executed for Shannon' s murder–and the agent in charge of the case was Dorsey's father. Now Dorsey is determined to find out where her father's investigation went wrong, what part he played in the death of an innocent man, and where Shannon has been all this time.