The Moment of Proof

How police tracked a yacht being used to smuggle deadly weapons into Britain. Plus, a prison phone call helps jail a bank cashier for arranging to steal thousands.

A discarded cigarette butt helps catch the murderers of a young father and a struck matchstick puts an arsonist of a Tudor building behind bars.

An airport hire car helps bring a pair of international hitmen to justice after a private investigator is murdered, and a bottle of Caribbean rum convicts a prolific burglar.

A train ticket and a chance encounter help hunt down a pair of high-tech international fraudsters, and a bottle of milk seals a case against a violent offender.

A blood-stained shopping trolley holds the key to solving a vicious assault, and a pair of distinctive curtains puts a phone thief behind bars. Narrated by Chuku Modu.

A drug boss is put behind bars thanks to a paper trail from his dodgy property empire, and an observant cashier helps convict a fraudster who is posing as a police officer.

A mobile phone hidden in a bundle of clothes helps save a young woman from a forced marriage in Pakistan. British embassy staff arrange for her escape back to family in the UK. Elsewhere, a burnt tea towel helps convict a gang of a callous shooting. Members of the gang are traced using mobile phone data, but not before the victim suffers life-changing injuries.

Bank notes stained with red dye hold the key to tracking down a brazen bank robber. Police trace him to the seaside town of Great Yarmouth, where they raid a static caravan being used as a hideout.

A packet of wet wipes helps convict a driver responsible for a deadly hit and run. A young father tragically loses his life as the offender denies any responsibility. Elsewhere, a distinctive tracksuit puts a gang of ruthless thieves behind bars. They threaten the victim with boiling water, unless he turns over his bank card PIN.

A travel card holds the key to convicting a violent offender after a spate of random stabbings. Police taser the man whilst he brandishes weapons on a public street. Also, a bureau de change receipt helps put a pair of thieves behind bars after they subject their victim to a terrifying ordeal.

DNA on a spent bullet casing holds the key to bringing two murderers to justice. Police have already discovered that their getaway car was equipped with a tracker that recorded the offenders' escape from the scene of the crime, but the DNA proves who was in the vehicle. Also, a hire car helps track down a thief who has stolen thousands from supermarket tills. The former member of staff used his inside knowledge to beat the supermarket's security systems.

A thief who prowls for victims on social media is locked up, thanks to the sheath of his knife. His online accounts contain evidence of the violent crime spree. Also, a plea for help scrawled on a £10 note puts two kidnappers behind bars. Detectives race to track down the victim while the offenders subject him to a torturous ordeal.

A plot to extort thousands of pounds from a casino is foiled by a high-stakes sting operation. Investigators hatch a plan to lure the suspects back onto British soil in order to arrest them. Also, a discarded cigarette butt helps convict a man of indecent assault, nine years after the crime was committed.

An elderly murderer is convicted after a cat-and-mouse chase with armed police. He had killed a man in a feud over garden clippings. And a fraudster is locked up after using dummy phone handsets to con high-street shops out of tens of thousands of pounds.

A car key helps crack a criminal conspiracy to steal luxury car parts. Offenders use both sophisticated and low-tech methods to beat the car's security systems and avoid detection. Also, a torch provides the proof needed to convict a man of violently assaulting a pensioner in a graveyard. A crucial lead comes from a public appeal and the release of a harrowing photo of the victim's injuries.