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.

An ordinary pair of pyjamas reveal the shocking true identity of an attacker who left his victim for dead. Plus, a bright yellow baseball cap helps put a daylight robber behind bars.

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

How an image of a distinctive ponytail solved a hi-tech bank heist. Plus, a single glove reveals the identities of a prolific and violent gang of criminals.

A plastic bag heat sealer convicts an online drug trafficker. Plus, a casual chat with a criminal, combined with a map, join up the dots to catch three burglars who are terrorising a neighbourhood.

A scribbled name in a discarded notebook is the key to putting a dangerous driver behind bars. The serial numbers on stolen bank notes crack the mystery of a dangerous gang wreaking havoc in London.

An expired pilot's licence exposes a fraudster flying under the radar. Plus, a wedding video helps to crack the case of an abducted teenager.

An anonymous letter holds the key to cracking the identity of a blackmailer on a mission to poison babies. Plus, an everyday satnav is the final clue to put a pair of prolific animal thieves behind bars

How an ordinary hoodie helps police finally take a vicious and dangerous attacker off our streets. A standard satnav reveals the mastermind behind the biggest armed robbery ever to hit Devon and Cornwall.

How a distinctive deer stalker hat is the red flag to cracking a web of stolen bank cards. One careless text message puts a dangerous stalker behind bars for the longest sentence in a police force's history.

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

How a distinctive wallpaper pattern exposed the lies of a con-woman claiming to have a rare cancer. A hidden compartment in a car holds the key to convicting a gang of stealing hundreds of thousands of pounds from UK charities.

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

A ripped-up, handwritten note holds the key to locking away two murderers. A simple business card reveals the true identities of a gang of con artists

A packet of medication helps to lock up a gang of violent jewellery thieves. A discarded gun cartridge helps the police to convict a man who gunned down a fellow officer.