 In 1979, Grace Foley (Sue Johnston), at the start of her career as a Forensic Profiler, assists in the arrest and conviction of Tony Greene for murder and mutilation of young men. Nearly thirty years later, Grace is called to give evidence at Tony Greene s Appeal. At the same time someone appears to be copying Greene s actions by sending a jar of pickled severed fingers to Grace. The team are sent current footage of a new victim having his finger cut off. The torturer promises that he will be murdered unless Grace admits that she was wrong about Tony Greene...