Jacob Malecki killed fifteen people over a thirteen-year period. At the height of the murders, Dr. Jo McCready was at university and, as an exercise, compiled a profile of Malecki, which broke open the case and helped send him down for life. Twenty-five years later a copycat killer is re-creating his murders. What's more, Malecki offers to help the police catch him from his own prison cell. Malecki claims he's repenting for his crimes. Jo doubts it, but as the body count rises, she can't ignore the killer's offer. What does he really want - and can Jo find out before anyone else dies?