Bedfordshire Police investigate a possible break-in and a devastating high-speed car chase, navigating the rights and wrongs of people taking the law into their own hands.

A lone detective is on the trail of a Luton man who sexually abused scores of young people, in what becomes a very complex and disturbing pursuit.

In the gripping conclusion to this two-part special, the victims of historic child sex abuse come forward to try and finally get justice, and prevent the suspect from walking free for the ninth time.

Hardened detectives DS Hutton and DC Brecknock are shocked by an extraordinarily disturbing case of attempted murder in an ordinary terraced home

Police officers search for a man in Luton who disguises himself as a delivery driver to force his way into people's homes and commit brutal assaults. However, when the police investigation fails to make headway, the family of one of the victims launch a campaign for information on social media - which increases the likelihood of the criminal seeing he is at risk of discovery and going to ground.

A violent daytime brawl with knives erupts on the streets of Luton as chicken hop war heats up. The case then takes a disturbing twist when a police raid lands a huge cache of drugs.

Bedfordshire Police race to rescue a missing 15-year-old girl after receiving intelligence that a 20-year old man is holding her captive at his flat in Luton. She isn't his only victim, the suspect has targeted a large number of other underage girls.

The real-life crime series has unprecedented access to a covert surveillance operation, which culminates in 10 simultaneous armed dawn raids against organised crime gangs.

Bedfordshire Police must decide whether to charge two men arrested as part of a nationwide operation against people possessing and, in some cases, distributing indecent images of children online.

During Luton's annual carnival a man seizes the opportunity to enter a house and sexually assault two young children. Bedfordshire Police scan thousands of hours of CCTV footage in the hunt for him.

A woman's body is found in overgrown grassland. When detectives inform her partner of her death, his behaviour marks him out as a chief suspect.

This extraordinary episode opens with the dawn arrest of a man on suspicion of conspiracy to murder. The film documents the work of the lead detectives as they investigate and interview the suspect about his involvement in a plot to shoot a man. While driving to work, the victim was hit from behind by another vehicle. When he stepped out to inspect the damage he was shot in his leg by a close range sawn-off shotgun, sustaining life-threatening injuries. The police believe the case arises from a potential love triangle that has spiralled out of control. Detectives have 24 hours to gather enough evidence to charge or release him.

Two lives change in a heartbeat after a single punch fells a man outside a nightclub. The blow kills the victim and the police arrest the attacker. Cameras follow every twist and turn as the police try to disentangle what really happened.

Bedfordshire Police have to confront the issues thrown up by a surge in the number of crimes related to the sexual exploitation and grooming of children by paedophiles. A man is lured to what he believes is a meeting with a 13-year-old girl, but is caught in a sting operation by so-called 'paedophile hunters'. A few days later, the case takes a surprising twist when police are called to a roadside where a pensioner is found badly beaten and suffering a bleed on the brain.

News spreads across the county about a suspected paedophile trying to abduct young children on their way home from school. Local press coverage has led to hundreds of calls from panicked parents to the police. With the culprit at large, cameras follow the Major Crime Unit as they lead the operation to arrest a third suspect following a nine-year-old girl's statement and an e-fit description. After two previous suspects have been released without charge, have they now got the right man? In the public protection unit, DC Annie Fowler and DC Selena Humphreys believe they have finally gathered enough evidence, including thousands of images and hundreds of videos of extreme child abuse, to ensure the suspect is remanded in prison pending a trial. Following his second arrest, he makes a frank and shocking confession. The detectives take this new information to the Crown Prosecution Service in the hope of preventing him from committing any more offences.

A man walks out of a hotel lift covered in blood. He approaches the reception desk shouting that he has killed someone. As the terrified receptionist tries to rid get 999, the man grabs the phone, but the police have been reported.

A man lies dying in the street from a stab wound to his heart. A friend at the scene is desperate to find out if he will survive but it is now a crime scene and he is not allowed to see the victim.

A man phones police to claim that there are body parts buried in the garden of a house on an estate in Luton and a search team is dispatched, but faces a wall of silence at the scene. Detectives suspect that it is a fantasy but, more worryingly, they may be being deliberately drawn into a long-running and brutal tit-for-tat gang war. Cameras follow every twist and turn of the case as it escalates further when the mother of the original complainant is stabbed in the chest.

Drunken abuse, the theft of 98p's worth of fizzy drinks and the joyriding of a 45-seater bus are all in a day's work for acting sergeant Wil Taylor. Some can seem like a waste of police time, while others quickly become serious - such as the case of three sex workers who have been arrested during a raid on a local brothel. Are the women victims, possibly trafficked to the UK from Eastern Europe, or are they running the business and exploiting others? Last in the series

The police have a complex case to deal with when a man comes to them admitting that he tried to set up a meeting for sex with a 12-year-old girl that turned out to be a sting operation carried out by online vigilantes.

Bedfordshire Police have a high profile case to handle when, English Defence League founder, Tommy Robinson assaults a Muslim man in Luton. They also try to help a Muslim woman seeking protection.

Bedfordshire Police are particularly busy. A care worker denies stealing a gold bracelet, a man denies being involved in a stabbing, and a suspect is questioned about an assault.

Banging from within a refrigerated lorry alerts Bedfordshire Police to a group of 15 illegal immigrants within. What starts out as a routine case takes a dramatic turn when the men start falling seriously ill.

A man has been attacked and left unconscious on the floor of a crowded pub for over 30 minutes. Detectives face a wall of silence as they search for evidence.

A woman calls the police to a block of flats in Luton and as they carefully advance down the corridor, a bloody handprint is clearly visible on the wall. The flat appears to be empty, but police suspect a man who has previously been in trouble with them has fled the scene. Cameras follow Bedfordshire Police's enquiry into a disturbing case that ends with a twist.