The first of two episodes that take viewers behind the scenes of a police investigation into the pre-mediated and brutal murder of a young man in the middle of woodland.

The second half of the double episode. The DCI believes that he knows who was behind the murder. Cameras follow the case as detectives decide to arrest the victim's friends.

In a two part special, a covert police unit track a smuggling operation bringing huge quantities of drugs into the UK. Can they catch the ringleader?

The covert police operation tracking a major drug smuggling operation closes in on the ringleaders in a nerve-shredding conclusion.

In Cambridgeshire, police hear a recording of a woman plotting to have her ex-husband killed - the start of a gripping investigation as officers race against time.

Police investigate a woman secretly recorded plotting to have a man she met on a dating site kill her ex-husband. Can officers gather enough evidence to prove it?

A 23-year-old man with a history of violence is questioned over a string of offences that have left victims badly hurt, but refuses to give any answers. Without fresh evidence, the police has no choice but to release the suspect. Within days of leaving police custody, he reoffends and officially ends up on the Most Wanted list.

In Luton, a man is shot in the chest by a complete stranger. The same suspect threatens a woman. With a gunman on the loose, a frantic manhunt is launched to catch the shooter before he strikes again.

Cambridgeshire Police have a big problem: a murder hunt without a body. A complex search for clues takes them into the woods and across Europe, and features a mysterious post on Facebook.

In Luton, a man who has been attacked at home dies of severe brain trauma. The investigating officer met the victim a week before and is haunted by the idea that maybe she could have saved his life.

Behind the scenes of a police investigation into the tragic, shocking death of an 11-week-old baby. A crime that leaves experienced officers shocked and dismayed by what they find, but determined to pursue justice for the baby boy.

Behind the scenes of a police investigation into the shocking death of an 11-week-old baby. The real-life drama of the police's search for justice for a baby, which digs deep to ask how and why Baby Teddy met his fate.

A true crime cold case special revisits the brutal, unsolved murder of six-year-old Rikki Neave 27 years ago. Only now can the full truth be revealed of how a killer remained unpunished and on the loose for nearly three decades.

A dedicated police team start a fresh investigation into Rikki Neave's murder, sparking a 'cat and mouse' game between the detectives determined to find justice and the suspect determined to evade it.

The story behind the murder of a man in Luton who is found dead and naked in the hallway of a block of flats. He may have unwittingly stepped into a honey trap, enticed by women with the promise of sex, when their real intention was to rob him.

Feature length special telling the gripping story of an armed siege in a tower block. With unprecedented access to the police command suite, we follow every twist and turn of the incident as it becomes more critical.

A man secretly films a couple having sex in an alleyway. Voyeurism can be a gateway crime, so the police are concerned when a club report a suspected attack on a woman.

A hook-up via a gay dating app leads to an accusation of rape. Featuring access to Bedfordshire Police's Rape & Serious Sexual Offences team, they try to work out whether there is enough evidence to charge a suspect who claims the sex was consensual.

A man is found stabbed to death outside a pub and another is fighting for his life with multiple stab wounds. Then another victim is found bleeding to death nearby in a garden. Police are baffled. But in this tight-knit community, nobody's talking.

Two men have been brutally murdered. The police have made arrests but the lead suspect is on the run. As the manhunt builds, a vital letter might hold the key.

The gripping inside story of a brutal machete and gun attack on a Luton doorstep, a gold chain, and a struggle against the odds to identify the attackers.