Two innocent children murdered by the same boy, Harold Jones. These killings are amongst the most calculated and sadistic ever committed by a child in the UK. Using cutting edge virtual autopsy systems at Plymouth University we examine how the children were killed based on pathology reports from the time. Every serial killer creates a signature - Did he continue killing as an adult?

Eight women murdered in 14 months. The worst serial killer to strike the UK since his namesake Jack the Ripper. All the women were prostitutes stripped naked and choked to death by having their underwear stuffed in their mouths, the killer then removed their teeth as trophies. The story made headlines across the country but is largely forgotten today. Why?

In the middle of all the murders lived a shy and unassuming family man named Harold Jones. A mere coincidence? The country's leading geographic profiler and forensic psychologists create a murder map and try to see if Jones movements correlate with the crimes and the spotlight is firmly placed on him. Will the evidence gathered be enough to get the Metropolitan police to re-open the case?