When a car is caught running a red light, police find themselves chasing an armed criminal. A suspicious death leads to the discovery of a deadly plot to poison a man.

A copper’s instinct leads to armed robbers being caught in the act, and a dangerous driver turns out to be a big-time drug dealer.

A stop-and-search leads to the arrest of a serial killer, a copper’s decision ends in an armed stand-off, and a road traffic collision cracks open a massive fraud case.

A traffic collision leads police to a cold-blooded killer. A casino gambler proves to be the key to a money-laundering scheme, and a speeding motorbike leads police to a prolific burglar.

A suspicious solicitor is caught arranging sham marriages, a poaching complaint brings down an international smuggler, and a dodgy number plate ends in a high-speed pursuit.

An everyday burglary proves to hold the solution to a series of ram-raids. A minor theft leads to a kidnapping conviction, and a consumer complaint leads to the arrest of prolific fraudsters.

An anonymous tip-off leads authorities to crack the UK’s biggest case of food fraud. A copper’s instinct uncovers a conspiracy to commit a massive insurance fraud, and a faulty brake light leads to police arresting two high-level drug dealers.

Antisocial behaviour helps solve a string of terrifying robberies, a disturbance reveals a massive haul of firearms, and a dodgy truck licence is the key to cracking a smuggling operation.

Two PCSOs are caught in a web of lies, a tip-off leads to police cracking a £2 million insurance scam, and a married couple rip off thousands of concertgoers.

A series of burglaries helps police to crack a drug-dealing conspiracy, a consumer complaint brings down a national fraud, and a jet-setting con-woman is brought to justice.

An accidental explosion in a Liverpool house ends up exposing a major drugs gang. And the theft of cash from an ATM leads detectives to a pair of serial fraudsters.

A suspicious financial transaction leads police to jail a prolific romance fraudster. And when a spate of break-ins prove to be linked, it ends with an alarming high-speed chase.

A rookie officer who helps a drunk man get home suddenly finds himself on the front line of a murder investigation. And shoddy building work helps convict a serial fraudster.

What looks like a one-off break-in turns out to be a long-term plot to steal regularly from an elderly woman. And a beat officer finds himself taking a murder confession.

What starts with reports of a speeding motorist ends with detectives jailing an aggressive drink driver, who ploughed into another car, killing two innocent people. And a tip-off about an illegal gun in a family home in County Durham helps police uncover a vast haul of dangerous weapons.

Neighbourhood cops searching for a stolen motorbike discover a massive stash of cocaine from a major Ecuadorian drugs cartel. And when a police investigator gets a report of a threatening phone call, it leads to her jailing a serial stalker responsible for harassing dozens of women.

A 999 call about a possible intruder puts police on the trail of a violent attacker. And a traffic stop on the other side of Europe helps police in Bristol solve a burglary crime wave much closer to home.

When an off-duty officer sees a small drug deal, it leads police to a huge cannabis farm. And a case of car clocking triggers a battle of wits between a cop and a serial crook.

A car that fails to stop for police turns out to be behind a life-threatening hit-and-run. And a single fake cheque is spotted by a sharp-eyed bank worker and puts investigators on the trail of a gang of con artists.

What looks like a devastating burglary of family heirlooms proves to be a sham and exposes the so-called victim as a million-pound fraudster. And when police stop a suspicious-looking car on a hunch, they end up bringing down an unscrupulous drug dealer.

A suspicious bag handover leads investigators to expose a major money-laundering gang. And police called to a road accident soon realise they’re dealing with a case of murder.

A seemingly accidental house fire leads detectives to snare a killer. And a van pulled over for having a cracked windscreen turns out to contain a massive cannabis stash.

A doorstep distraction burglary leads officers to a violent serial offender. And police cracking down on drug crime uncover a huge fake ID factory serving criminals across the UK.

A one-off burglary puts police on the trail of a gang stealing luxury cars to order – and in search of an international fugitive. And when a bank worker is approached on social media, it rings alarm bells and helps bring down a major fraudster and identity thief.

Police called to do a welfare check on a missing man end up hunting for a double murderer. And an officer on his day off spots a car he knows belongs to a disqualified driver. His investigation not only catches a serial driving offender but a man with a whole load of Class A drugs.