Frontline Fightback

Young mum Courtney Slater is dragged screaming from her car at knifepoint in a terrifying early evening robbery in a quiet residential street. But Courtney and her boyfriend are determined not to let the criminals get away with it. Using an app on their mobile phones, they recover their car and help police track down the robbery gang and bring them to justice.

A nurse working in Barnsley Hospital's emergency department returns home after a gruelling 12-hour shift, only to discover her house has been broken into. Neighbours rally round and two local companies step in to fit her home with an alarm system and motion-detecting technology.

Detectives in Hull go to great lengths to build up a digital trail of evidence that leads to two moped muggers who robbed an 85-year-old woman on her way home from church.

A Neighbourhood Watch group compiles an impressive dossier of digital evidence that helps police identify two wanted burglars. Criminologist Dr Emmeline Taylor says groups like this can be a vital tool in the fight against crime.

Millions of cars are fitted with dashcams, and the footage they capture is increasingly being used as evidence in cases of dangerous driving, like when two cars collided in a horrific head-on smash in the Cotswold town of Lechlade. One of the cars span out of control and hit bystander Nadine Wood, causing her life-changing injuries. Thanks to dashcam footage retrieved from one of the vehicles, it's quickly established that one of the drivers had jumped a red light and had been driving dangerously.

An Italian jeweller's in Ely, Cambridgeshire, is broken into and ransacked by a masked gang. But thanks to the latest facial recognition software, criminals like these can no longer be sure of evading justice. One company demonstrates how a suspect can be identified even if their face is partially hidden.

We see how thousands of repeat offenders – including burglars, robbers and thieves – are being fitted with electronic GPS tags, and in many cases their movements are being monitored 24/7. Probation officer Suzanne Bennett tells the programme that, in her experience, no-one wearing one of these tags has reoffended.

Police close in on a robbery gang targeting people who buy and sell goods on Facebook Marketplace. The robbers are finally caught thanks to data captured by their electronic curfew tags. The data not only shows they weren't at home, it also places them close to the scene of the crime.

A massive gas explosion rips through a small town, causing widespread damage. Eighty people are injured in the blast, and nearly 100 are evacuated from their homes. Investigators use the latest forensic and digital search techniques to uncover the truth – that the explosion was part of an attempted £50,000 insurance scam.

An ex-boyfriend throws acid into a young woman's face, then uses a series of disguises in an attempt to throw police off the scent. But number plate recognition cameras help prove he was in the area and responsible for the horrifying attack.