Part One: When Lennox is accused of planting evidence in an armed robbery case, Meadows is determined to prove his innocence, and to find evidence to charge the suspect's accomplice, Phil Brown. Unfortunately, Brown claims to have been an informant for former Sun Hill alumni Don Beech, which makes Chandler determined to drop the case at all costs. When an old friend of Meadows' reveals that George Stubbs had previously bribed Chandler's DS at Park Rise, Meadows realises he has some ammunition against Chandler, and uses it to gain the leverage he requires on Brown. Meanwhile, Boyden and Hagen help Clarke recover her ASP when it is stolen during the pursuit of a robbery suspect.

Part One: Smith and Klein attend to Mr Kennedy, whose house and garden shed have been attacked by vandals repeatedly over the past few weeks. When Kennedy threatens to take matters into his own hands, Smith casually comments that he wouldn't blame him if he did. Smith and Klein both apply for new jobs; Smith submits his application to SO19, and Chandler wants Klein to take the position of partnership officer at the Town Hall. When Kennedy shoots a young boy, and insists that Smith told him to do so, Klein reluctantly confirms what was said. Smith puts his career and transfer at risk when he accuses Klein of grassing him up before savagely assaulting him in the station corridor.

Part One: Cryer, approaching his 30th year of service, finds Chandler doubting he is still up to the job. As a test he assigns Cryer the difficult task of resolving a situation where a group of prostitutes are at loggerheads with a local residents group led by Councillor Angela Morris. Cryer suggests a 'zone of tolerance', a non-residential area where the prostitutes can work without upsetting the locals, and manages to convince the girls to give it a try. Just as events get under control, an incident puts Cryer back to zero. Meanwhile, Smith heads to New Scotland Yard for his interview with SO19, and befriends PC Julie Stanley. After successful interviews, the pair prepare for an intense training regime.

Part One: New Area Car driver Des Taviner makes an instant impression on the relief when he starts work on the night shift at Sun Hill, with his no-nonsense attitude and sharp wit impressing the likes of Page and Hayward, however Stamp is wary of his rival’s methods, having briefly worked with Taviner whilst on secondment to the Robbery Squad. Taviner is paired with Worrell, but soon demands she be taken off the role as Area Car operator, saying she is "clueless". Paired with Hollis, Taviner uses his colleague’s experience and knowledge to learn the lay of the land. However, Hollis is later left doubting his new partner when Taviner chats up two girls waiting for the night bus, offering them a lift home. Two drunk girls from a hen party brought in by Stamp and Hayward give Glaze an unexpected break in a series of rapes on the Jasmine Allen estate, but it come too late to stop another attack when residents report a woman screaming on Canley Fields, leading to the entire night shift racing to the scene to track the woman down.

Part One: Singh goes undercover at a 'car cruise', where he becomes involved with a well-organised car ringing gang led by Kevin North, in order to gather information on a scam involving stolen cars, of which leads are very few and far between. Meanwhile, Webb tries to cultivate an unofficial 15-year-old snout named Tyro Shaw, in the hope that he will grass up his father, Steve Shaw, an old nemesis who has a list of previous convictions. Singh poses as a car thief, and is soon initiated with the gang, even gaining a meeting with North's boss, Jennifer Salter. As Webb gets frustrated by Shaw's dead-end leads, Singh discovers he is working with the gang and pushes him too far about his involvement.

Part One: With the Section House closing, Hollis is not only looking for a new place to live, but is also applying for a transfer to SO14, the Royal Protection Unit. As he closes on a sale to buy a flat owned by an elderly friend, Doreen Tyler, she changes her mind at the last minute, so he moves in with Stamp. Hollis's intuition gives CID an important lead on a planned armed robbery, but his uniformed colleagues conspire against him to have Klein organise the Section House closing party instead of him. Upset that his colleagues no longer value his credibility, Hollis decides to skip the party and goes round to visit Doreen, only to find her lying on her living room floor with head injuries.

Part One: Chandler takes a personal interest in the case of a shooting at an off-license. When he confides his reasons to a young woman who was threatened by the gunman, he is horrified to find she was a journalist, and the story is published in the Sun Hill Gazette. Feeling unappreciated in the job, Meadows considers other options, and attempts to smooth things over with his long-suffering wife, Laura. Meadows teams up with McAllister and the two of them strike out on their own. After a few close calls, they arrest their prime suspect, a motor mechanic named Alan Merrick, who has a history of firearms offences. As they interview him, however, the gunman strikes again.

Part One - The Dark Side: Hayward breaks down during a talk with primary school pupils, when he gives a powerful speech about the death of his sister to teach them the dangers of drugs. Gilmore is not happy, but the teacher thinks Hayward's sensitivity will help the students get the message, and may also help them trust Hayward enough to report a bully. An old friend of his sister's asks him out, although when he meets her at a gallery opening, Hayward thinks her friends are dealing drugs. Klein and Hayward find the bully, "Red", who has been using two fierce dogs to steal money and mobile phones from school children. They trace the dogs to the flat of drug-addicted prostitute Stacy Dodds, and a search of her flat uncovers a large stash of heroin. CID are drafted in when Red accuses Stacey of sexual abuse.

Part Two - Angel Rooms: Hayward and Klein arrange to get their stories straight over the missing bag of heroin. Stacy insists her pimp forced her to deal drugs and have sex with "Red". Clarke ends up sleeping with "Phil the Pill", and is surprised when he turns up at Sun Hill the next day and announces himself as DC Phil Raven from the Drugs Squad. Raven arrests Benji Pullinger for intent to supply, but inevitably the missing bag is mentioned in the interview. Station gossip starts to point towards Klein, and Hayward confesses to Gilmore what really happened. Whilst out at a nightclub with his new girlfriend, Fiona, Hayward sees Raven selling drugs, and discovers that he and Fiona are former acquaintances.

Part One - Going Underground: Chandler is approached by Chief Inspector Morys from the Football Intelligence Unit when an undercover officer is stabbed on Sun Hill's patch after a game. Chandler and Morys start a joint operation to infiltrate the gang responsible, Britannia, spearheaded by former police officer Julian Napper. Webb is sent undercover as builder Mickey Malone, with Riley and Quinnan his undercover partners and McAllister posing as his girlfriend. Webb gets gang member Gary Hughes on side, and he travels with him up north to meet Napper.

Part Two - To Us and Ours: Webb closes on infiltrating the gang, despite the suspicions of some of its members. Suspicions are fueled when McAllister, posing as his girlfriend, turns up to a gang meeting overdressed and wearing Givenchy perfume. Napper smells a rat and follows McAllister as she desperately tries to find a hospital to keep her cover intact. Napper catches up with her and accuses her of being an undercover reporter. With her cover blown, McAllister returns to Sun Hill. Chandler blasts her for her stupidity, and forces her to take notes as they hear Webb taking a severe beating from Napper's thugs.

Part Three - Kick Off: The England game is on, and the Britannia gang are set for a battle with the "Dogs of Hell", an opposing European gang of hooligans. Webb is assigned to find the location of the pre-match meeting, while Riley and Quinnan go undercover at the match itself. To Riley's horror, Quinnan is arrested when he accuses a photographer of inciting violence. Webb, meanwhile, is on his own after a mix-up about the meeting location, and ends up in the thick of a pitched battle between the gangs. When the nearest riot unit available are deployed from Sun Hill, Webb's cover is blown when he is recognised by some of his fellow officers.

Part One: After faking his death in Australia, Beech returns to London and pulls off a £6.5 million pound safety deposit box robbery, using a car bomb as a distraction. Stanton, now with a security firm, is assigned the task of retrieving documents stolen in the heist for a particularly rich client. While Beech's old friend Tommy cashes up his haul, Beech's firm are becoming increasingly frustrated at not receiving their cut of the cash. While Stanton continues to engineer the safe return of the documents, and organises a drop off, she spots none other than Frankie Nguyen getting into the back of a cab. As Tommy refuses to deal with Frankie, she lashes out, leading to disastrous consequences.

Part Two: Beech informs Tommy's daughter Stella that her father was murdered, and promises to find his killer. Meanwhile, Frankie panics about being seen by Stanton, who is hot on her tail. Stanton is pulled in for questioning over her contact with Greneski, and plants the theory that Beech is still alive and is responsible for the robbery. Frankie starts to become more and more agitated at the fact that Beech wants to stick around in London, and Beech gets the shock of his life when Stanton turns up at Tommy's shop. Stanton gets a shock of her own when an anonymous tip leads her to find Beech at a local graveyard, but Beech is determined not to let Stanton get the better of him once again.

Part Three: Beech takes Stanton hostage in his car, but on the way to a secret location, is pulled over by two uniform PCs for his erratic driving. Posing as 'Matthew Boyden' from Sun Hill, Beech once again makes good his escape and takes Stanton to an underground bunker where Frankie urges him to kill her. When he refuses, Frankie decides she'll have to do it herself, or risk being taken in and imprisoned. Beech disapproves of Frankie's methods when she uses forms of torture to gather information from Stanton. Frankie realises that Beech may no longer be on her side, so she goes over the side and offers to help Stanton in any way she can.

Part Four: Beech's trust in Frankie begins to slip, and as he sends her out on a number of errands, he keeps an increasingly twitchy Stanton under lock-and-key. However, Stanton manages to make radio contact with an outsider and he alerts DS Peters and DCI Belmarsh from the Robbery Squad, who begin a search for the underground bunker where she is being held. In an effort to escape, Stanton breaks the lock and shatters any chances of Beech letting her go. As the team locate Stanton's hiding place, they are forced to use cutting equipment to get through the steel door into the bunker. However, Beech hatches a plan that puts everyone in the vicinity at risk, including himself.

Part Five: Beech manages to get himself back to London after the explosion at his bunker, but suspects that Frankie has double-crossed him, so he finds a new ally in the form of Rachel, Tommy's granddaughter. As Rachel holds Beech up in an apartment supposedly owned by her married lover, Stanton recovers in hospital. When Beech discovers that Frankie is trying to broker the deal without him, he goes in search of his former partner, only to be cornered by Giorgio, who turns up at the handover and demands his share of the money. As the tensions rise, bullets fly, leaving several members of the gang dead.

Part One - On a Clear Day: Rickman's loyalties are divided when she's faced with the return of her ex-lover, Leroy Jones. Harker tries to warn her that Leroy is still up to no good, and soon discovers that Leroy is under surveillance by National Crime Squad. Meanwhile, Cullen is trying to prove his worth to the NCS, and uses the news of Leroy's return to try to get his feet under the table. When Leroy is implicated in an investigation regarding an undercover police officer, Rickman wonders if she has given too much information away, and finds herself testing her own loyalties. As Klein and the rest of relief celebrate his birthday, Leroy asks a stunned Rickman to leave Sun Hill and move to South Africa with him.

Part Two - Come Live With Me: As Harker becomes involved in the NCS investigation, he warns Rickman about Leroy's suspected connection with heroin smuggling and a triple-homicide, but she doesn't believe him until she confronts Leroy. With the help of Nina, a woman he met in the hotel lobby, Harker keeps tabs on Leroy's movements until the NCS and CID make their move and raid a nightclub owned by one of Leroy's associates, Jan Resenbrink. A search of the furniture by Customs reveals no drugs as suspected, so Leroy is released. As he angrily heads off to the airport, leaving behind a distraught Rickman, his fingerprints are found on a gun used to murder an undercover NCS officer, DS Hanbury.

Part Three - In Another Life: Harker tells Cullen that he knows Leroy didn't kill DS Hanbury, but CID use the charge as leverage to convince Leroy to help them catch Resenbrink. Rickman attends a possibly racially motivated attack on Didi Marr, the boy who was found with heroin on the Bronte Estate. His attacker is Nicky Gable, and the racial element of the case becomes unlikely when it is revealed that Gable is in mourning for his mixed-race brother. Harker arranges with Leroy to escape, and offers to clear him of the murder charge on the condition that he ends his relationship with Rickman. With Leroy's help, Cullen and Pennington arrest Resenbrink, but when he is freed on bail, events take a disastrous turn.

Part One - A Pound of Flesh: The relief find themselves short-staffed with Boyden and Hagen having taken leave. Singh investigates several assault cases, which he believes are down to a moneylender getting heavy handed when calling in a debt. Ackland sees the mother of one of the victims talking to Amy, Boyden's daughter, and it turns out she is also in debt to the loan shark. When Amy is arrested for petty theft, Ackland convinces Boyden to talk to her, and when Amy is assaulted by the loan shark's thugs, Boyden resolves to pay off her debt himself. When he turns up with the money, he is recognised by one of the men as a police officer, blows a CID raid on the office and leaves Amy in grave danger.

Part Two - Home Run: Boyden goes all out to protect his daughter Amy after the arson attack on her flat. Hagen is sceptical of Amy's true motives, and her suspicions are confirmed when she finds her going through her bag. Meanwhile, Singh pressures one of his informants, Shanaz, into setting up a drug deal with the Mullens. However, unbeknown to him, the operation has already been rumbled and his informant is about to become the victim of a savage beating. Whilst out on patrol, Hagen and Carver catch sight of Amy and decide to follow her. They witness a drug deal taking place involving Amy, Ashley Mullen and an unknown courier from the estate. Having no choice but to report it, Amy is arrested.

Part One - Lifelines: Hagen, still hurting over her breakup with Boyden, is paired with Stamp to investigate the mugging of pensioner Archie Dodds, who has had his wallet taken by a youth. When the mugger is spotted assaulting another pensioner, the pair set off in pursuit; however, when Stamp stops to help the victim, the suspect manages to escape, and Hagen's impatience gets the better of her, resulting in the pair having an ugly argument. Elsewhere, Taviner is fed up of Carver's "community policing", so Monroe swaps with him with Hagen. She and Taviner find they have a lot in common, but it soon becomes clear he is only being friendly to get her into bed, and she delivers a swift knee into the groin when he makes a cruel comment about her dating history. To get her mind off it, Hagen reluctantly joins Page, Clarke, Rickman and Worrell on a girls' night out, and quickly picks up a date in the club; as she takes him home to Page's flat, disaster strikes.

Part One - Night Games: DI Liz Rawton returns to her old stomping ground Sun Hill to head up an operation into catching a dangerous rapist who has committed over 20 attacks. Meanwhile, Ackland is unable to attend the final of the "Ask a Policeman" quiz hosted by Tony Blackburn, forcing Monroe to replace her with Spears. Spears saves the day and wins the relief a weekend away at a grand hotel. However, unwilling to go, she asks to be seconded to Rawton's investigation, but her request is denied by Cullen and she is forced to go "team building" at the hotel. Rickman and Clarke take a shine to Thames Valley DS Pete Cork, but he only has eyes for a certain DC. By bribing a hotel rep, Cork ensures that his blind date for the salsa evening is Spears.

Part Two - Aftershock: A traumatized Spears attempts to escape from her attempted rape by DS Cork. He eventually leaves and chats up Rickman, allowing a reeling Spears to recover. Her hopes of forgetting the events of the night before are extinguished when Cork re-appears, and things take a shocking turn when one of the event coordinators turns up dead. Meanwhile, Rawton is devastated when her main informant and one of the early rape victims, Terri Gibbings, goes missing. As she liaises with none other than DS Cork, she brings him on board as a profiler. Spears decides after her ordeal that she no longer wants to be on the rape case, but when Rawton's DS Pauline Wherry is caught being heavy handed with a victim, Rawton boots her off the team and Cullen volunteers Spears to replace her. To make things worse for Spears, she discovers Cork is the new profiler.

Part Three - Compulsion: Rawton addresses the team, and puts forward the theory that rape victim and informant Terri's death was not suicide, but murder. Whilst Cork and Singh voice doubts, Spears supports Rawton's theory. Spears returns to the riverside where Terri's body was found, and makes a major break-through when a passer-by reveals that his wife saw Terri's body being dumped. Later, Spears decides to keep an eye on Cork, and follows him to a pub where he meets up with an old mate, DI Freddie Collins. On her return, Spears spots a man lurking outside her flat, but he turns out to be her old friend Eddie, who works for the Thames Valley police. After trying to dig up information on Cork, Eddie disappears without trace.

Part Four - Shout: Whilst Rawton and Cork are visiting the scene of the latest attack, Cork is doubtful that the perpetrator is the same man that they are looking for, as there is no bag over the victim's head, and her hands haven't been tied. Following a lead from Cork about a rapist he pursued years earlier, Rawton consults an ignorant DI Collins, but Cork demands he "play nice". Meanwhile, Spears is fruitlessly searching for her missing friend Eddie. She fears for his safety when Cork hands in his phone, claiming to have found it. As Singh propounds to Cork and Rawton that their prey might be getting bolder, Rawton gets a blast from the past that leaves her mortified.

Part Five - Judas Kiss: Spears is horrified when she is confronted by Cork in her own flat, and when Webb comes to her rescue, he gets the wrong end of the stick and thinks she is now dating Cork. The following day, whilst searching suspect Bennett's home, Spears is suspicious when Rawton finds evidence on a shelf Cork claimed not to check. Clarke feels disillusioned as she faces a CIB grilling for her savage attack on Bennett during the undercover op, but she gets a further shock when an emotional Spears admits what Cork did to her. As both Cork and Spears go missing, Rawton is disappointed she didn't work out what Spears was going through, but the night is only going to get worse as Cork comes face to face with rapist Ferdinand. Meanwhile, Klein is blackmailed by hotel worker Tommy as he wrongly awaits trial for the crush Fay, the woman killed at the hotel.

Special Attention: Taviner and Hollis are 'volunteered' to look after new recruit, Special Constable Terry Knowles. Meanwhile, Singh and Riley visit the Mahmoods, whose house has been vandalised. They claim that their neighbours, the Halston family, are racists, and imply they caused the damage after Janice Halston was sacked from launderette for stealing. Out on the beat, Knowles is desperate to prove himself, and wants to attend the call when he hears that the Mahmoods' launderette has been smashed up, but Taviner tells him to wait. Later, Taviner insists they ignore a call, requesting further help for the Mahmoods. Back at the station, Gilmore cautions Taviner to refrain from corrupting Knowles.

Lure of the Sirens: An angry Taviner is allocated to CAD duty by Gilmore, who is determined to rein in the maverick copper. Taviner responds by going home sick. Stamp is amused by Taviner's predicament, but Knowles is sympathetic. Meanwhile, the relief are called to a domestic disturbance, where a man trying to get into his estranged wife's house. He wants to take his sons to a football match, but his wife won't allow it. Knowles makes his feelings clear about absent fathers, but Hollis reprimands him. As they attend a call regarding youths damaging cars, they recognise Josh, a young lad who is infatuated with Taviner. He denies doing the damage, but gives a description of those responsible. When Taviner returns to work under orders from Monroe, Josh takes drastic action to get Taviner's attention.

The Risk Factor: Carver and Taviner follow Page and Knowles into a flat, where they find terrified tenant Billy Martin. Outside, they chase two masked men but lose them. Later, Taviner is water-bombed by kids, much to his colleagues' amusement. Later, Page and Knowles spot a man hanging around a local school, and Knowles gives chase, but loses him. Page later identifies him as Dave Scoby, a registered sex offender. Knowles notices his address, and is concerned as he lives nearby to his sister and her daughters. Page makes it clear that no matter what his concerns are, he is not allowed to tell them. Knowles struggles to keep the information to himself, but unwisely confides in Taviner.