For Oliver Fazackerley, killing is an art form.
Can computer scientist Dee Patel and her DCI boyfriend catch him before he kills again?
Serial killer Oliver Fazackerley feels your pain, literally.
Oliver has mirror-touch synaesthesia so when he sees others touched, or in pain, he feels the sensations in his own body.
Like other mirror-touch synesthetes Oliver has a more developed sense of empathy than others.
When he secures a job as an IT consultant for The Samaritans Oliver taps into the email server and reads some of the messages.
He tracks down and kills those responsible for the emailers' distress.
Hot on his heels are forensic computer scientist Divya Patel and her Detective Chief Inspector boyfriend Ben Saunders.
Can they connect the murders and find Oliver before he kills again or will his empathy for his victims be his ultimate downfall?