When a 17-year-old boy is chased down and stabbed in a vicious assault, the only evidence are his dying words, caught on body camera, that there were four assailants. Nottinghamshire Police turn to their Digital Forensics Unit to track down the culprits through their online and phone footprints. Using ground-breaking policing techniques, the hunt for the suspects is on.

The burnt body of a 27-year-old man is discovered in a remote nature reserve in Scotland. All forensics were destroyed in the fire and detectives turn to Police Scotland’s Digital Forensics Unit to help solve the case. And, as this true crime documentary reveals, using ground-breaking techniques, they’re able to track the suspects through the digital footprint they think they have destroyed.

The brutal murder of 13-year-old boy in a public park horrifies Britain. Detectives start to build a case using the victim’s phone. This true crime documentary follows officers as they uncover evidence of a dispute exposing a violent and disturbing online world that seems one step ahead of the investigation. It’s a race against time to find the suspects and secure a conviction.