A regular pair of pyjamas reveals the shocking true identity of an attacker who left his victim for dead, and a bright yellow baseball cap puts a daylight robber behind bars.

An extraordinary surveillance operation leads straight to the kidnappers - and their hostage. Plus, a single text message, hidden among thousands of others, nails a serial fraudster.

A grainy video from a petrol station forecourt helps convict a gang of cold-blooded killers, and a criminal’s mobile phone finally connects an unscrupulous gang targeting the vulnerable.

A distinctive hat leads police to a prolific gang stealing bank cards, and one careless text message puts a dangerous stalker behind bars for the longest sentence in a police force's history.

A hoodie helps police take a dangerous attacker off our streets, and a car's satnav reveals the mastermind behind the biggest armed robbery ever to hit Devon and Cornwall.

A wedding video helps crack the case of a teenage abduction, and an expired pilot's licence exposes a fraudster flying under the radar.

How a discarded scrap of paper found in a household bin helps convict a cold-blooded killer; and a distinctive mole holds the key to tracking down a dangerous and predatory attacker.

Two young women are shot dead in Birmingham on New Year’s Eve. But it takes an audacious undercover mission for police to infiltrate rival gangs and find the moment of proof.

Police suspect foul play after a meet-up goes wrong. But it takes toxicology tests to reveal the deadly cocktail that convicts a killer.

A discarded cigarette butt gives police the proof they need to find the murderers of a young father shot and killed in broad daylight. A used match found in a drainpipe identifies a arsonist who burnt a 400-year-old building to the ground.

A yacht is tracked by police as an organized crime gang uses it to smuggle deadly weapons into Britain and a recording of a prison phone call helps jail a bank cashier for arranging to steal an elderly couple's life savings.

How a distinctive wallpaper pattern exposed the lies of a con-woman who claimed to be suffering from a rare cancer. And a hidden compartment in a car holds the key to convicting a gang of stealing hundreds of thousands of pounds from UK charities.

A distinctive sticker on a laptop finally links a man to a string of burglaries that had terrified an entire community, and a shiny copper hair dye puts a dangerous armed robber behind bars.

A vehicle's satnav puts a pair of prolific animal thieves behind bars, and an anonymous letter holds the key to the identity of a blackmailer on a mission to poison babies.

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.

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.

A fingerprint on a fish and chips wrapper places a gunman in a rural location miles from his home, and a man’s laptop reveals that he is behind a luxury gift card fraud.

A jacket recovered from a suspect’s home has the DNA of two stabbing victims on it, and a fingerprint on a getaway car number plate snares an armed robber.

Fingerprints found after a break-in and brutal beating are enough to convict a man of murder, and crooks who burgled a man's home and started using his credit card are caught by CCTV.

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.

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.

A blood-spattered hammer is the key to charging the prime suspect in a murder case, and a drug gang is brought down when one detective focuses on how the product is packaged.

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.

A single piece of paper found on top of a hidden fax machine gives police the number of a shipping container used to smuggle millions of pounds' worth of drugs from Thailand.

A hammer contaminated with the DNA of both victim and killer helps police solve a murder investigation, and a burglar is caught after photographing himself at the crime scene.

A man is linked to a series of murders by a shoelace with his final victim’s DNA on it, and coded information in a spreadsheet reveals the perpetrator of a campaign of blackmail.

An ice pick is recovered from the roof of a pub and brings a murderer to justice, and an anonymous letter throws suspicion on a man who may be storing and manufacturing guns.

A car hidden deep within a scrapper’s yard unlocks the riddle of a suspected gangland shooting, and police secure the UK's first conviction for modern day slavery at a car wash.