With Mary pursuing a new career as a Private Investigator, Luke Talon is missing his partner, but he has no time to think about it when a body of a thirteen year old girl turns up. Soon, he starts noticing that there are similarities between this victim and Clair Lorrence, Mary's sister who was killed 10 years ago.With the help of Cook County's Medical Examiner, Grace Austin, the two of them will have to figure out if it's coincidence or something much, much more.