A USB stick with information about illegal drugs is found at a respectable businesswoman’s house, and police crack down on the conversion of guns designed to fire blanks. Show more
A few spots of the victim’s blood on a blue shirt convict a murderer, and a rapper incriminates himself when videos he posts online about his drug dealing are seen by the police. Show more
An airport hire care helps bring a pair of international hitmen to justice after a private investigator is murdered, and a bottle of Caribbean rum helps convict a prolific burglar. Show more
A yacht is tracked by police as a gang uses it to smuggle deadly weapons into Britain, and a prison phone call helps jail a bank cashier for arranging to steal thousands. Show more
A bloodstained shopping trolley holds the key to solving a vicious assault, and a distinctive pair of curtains puts a phone thief behind bars. Show more
A discarded cigarette butt helps catch the murderers of a young father, and a struck matchstick puts the arsonist of a Tudor building behind bars. Show more
A train ticket and a chance encounter help hunt down a pair of hi-tech international fraudsters, and a bottle of milk seals a case against a violent offender. Show more
A mobile phone hidden in a bundle of clothes helps save a young woman from a forced marriage, and a burnt tea towel helps convict a gang of a callous shooting. Show more
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. Show more
A travel card holds the key to convicting a violent offender after a spate of random stabbings, and a bureau de change receipt helps put a pair of thieves behind bars. Show more
A packet of wet wipes helps convict a driver responsible for a deadly hit and run, and a distinctive tracksuit puts a gang of ruthless thieves behind bars. Show more
Stained bank notes hold the key to tracking down a brazen bank robber, and hidden-camera footage from a hi-tech sting operation helps snare a prolific gang of thieves. Show more
A spent bullet casing holds the key to bringing two murderers to justice, and a hire car helps track down a thief who has stolen thousands from supermarket tills. Show more
A thief who prowls for victims on social media is locked up, thanks to the sheath of his knife, and a plea for help scrawled on a £10 note puts two kidnappers behind bars. Show more
A plot to extort thousands of pounds from a casino is foiled by a high-stakes sting operation, and a discarded cigarette butt helps convict a man of indecent assault. Show more
An elderly murderer is convicted after a cat-and-mouse chase with armed police, and a fraudster is locked up after using dummy phone handsets to con high-street shops. Show more
A car key helps crack a criminal conspiracy to steal luxury car parts, and a torch provides the proof needed to convict a man of violently assaulting a pensioner in a graveyard. Show more
A fingerprint from an old break-in solves a murder at the same factory months later. Elsewhere, a DNA spray means police can finally apprehend a prolific motorbike thief. Show more
Blood spatters found on a trench coat belonging to a suspect in an unrelated case of armed robbery links a callous killer to the murder of a wealthy pensioner. Show more
A hotel guest book gives police the names of an international drug smuggling network, and thieves who stole £20,000 of food from a factory are caught out by a car number plate. Show more