This police drama follows the activities in and around Sun Hill, a police station located in the fictional East London borough of Canley. The focus is not just the gritty reality of police work, however; the lives and loves of the officers who staff the precinct get equal play.
Bradford has killed before, but would she really murder Kane's children?
Kane is frantic with worry about where his kidnapped children are, but the answer is surprisingly close to home.
Kane finally comes face to face with his wife's murderer - Cathy Bradford.
Okaro blames himself for the crisis at the station. Meanwhile, Bradford is finally arrested.
Okaro faces his own marital nightmare, when the arrest of two muggers leads to the discovery that his wife has helped steal church funds.
Okaro faces a tough time as his wife is arrested. Nixon's attempts to gather evidence against a counterfeiter backfire.
Tait calls an ambulance when Murphy's baby stops breathing. Hemmingway deals with a rape victim who is being stalked and traumatised by her attacker.
Murphy is rushed to hospital with her life hanging in the balance. Stamp and Harman arrest an ex-criminal for assaulting his prospective daughter-in-law.
Dale tells Cameron that Kerry has a habit of seducing men. A man in custody for bigamy claims he has murdered someone.
Des tries desperately to see his dead daughter. Neil poses as a hitman to catch a woman who wants her husband killed.
Sheelagh buries her baby daughter, but is devastated to discover an operation has been mounted to catch Des at the funeral.
The hunt is on for Des, as he holds Sheelagh and Cameron hostage. June is faced with a shocking revelation.
June confronts Gabriel over the shocking discovery that he is her son. Cameron is still being held hostage by Des.
Gabriel begs June not to end his career. Eva and Neil work on the case of a missing girl. Polly Page returns.
Gabriel fears his identity is about to be exposed, so he makes a deal with June.
Jack Meadows's former lover and ex-prostitute Rachel tells him she is carrying his child.
New PC Andrea Dunbar makes an immediate impression - but the rest of the team don't know that she is an undercover reporter!
Reg is confronted by Des Taviner, who wants to tie up some loose ends but ends up pulling a gun on his one-time comrade.
The officers at Sun Hill are stunned at the discovery of Des Taviner's battered body. Sheelagh finds her judgement under scrutiny.
Nick Klein gets involved in an assault case that ends up endangering his life.
Nick Klein is interviewed about the shooting he witnessed. Polly gets a taste of police work again.
Nick is recovering from a massive heroin overdose and suspects Phil Hunter is to blame.
Weaver threatens to kill Phil if he refuses to betray Nick Klein. Details of Polly Page's life are splashed across a newspaper front page.
Gabriel convinces Kerry that she's been date-raped. Debbie McAllister and Ken Drummond nail a local drug boss.
Hunter is still under pressure from Weaver to find out where Klein is. McAllister investigates an Albanian gangster.
Klein returns to the safe house, only to find Weaver is lying in wait.
Holmes is in turmoil over the thought that Smith might have raped her. Hemmingway and Dunbar investigate a case of fighting tramps.
Kerry faces an explosive situation as a bank hold-up takes a dramatic twist when a man is pushed out of the building with a bomb strapped to him.
As the dust settles on the explosion, Kerry is found alive among the rubble, although the bank manager has been killed. Suspicion falls on Smithy.
With Kerry's alleged rape plastered across the papers, undercover journalist Andrea deflects attention away from herself by pinning the blame on Gabriel.
New. Terry Perkins goes behind bars in a bid to infiltrate a paedophile ring led by dangerous prisoner Charles Mawdsley.
Australian copper DI Peter Cavanaugh turns up and ruins Neil Manson's surveillance operation. Meanwhile, Adam Okaro gives Lance Powell a dressing-down.
Kerry decides to drop the rape allegation, despite pressure from Gina, and the reliability of Don Beech's information is called into question.
Gabriel commits a shocking act of violence after discovering a paedophile is living on a Sun Hill estate, and Peter Cavanaugh falls for Samantha Nixon's charms.
An operation to nab a gang of diamond thieves goes badly wrong, leaving undercover officers Sam and Cameron in danger.
Peter Cavanaugh goes on the run and persuades Sam to leave the country with him - then takes her hostage when she twigs he's up to no good.
Ken Drummond's life collapses around his ears when his distraught son confesses that he has killed a prostitute, then threatens to kill himself.
Gabriel blackmails Kerry into helping him exact revenge on a woman's violent ex-boyfriend, while Ken attempts to negotiate the release of an abducted baby.
Desperate to find his kidnapped daughter, Phil ignores Jack's warnings and follows up a lead from an informant - only to be shot by an unseen gunman.
Phil and Sam face a final showdown with Weaver in an underground tunnel, and Yvonne's efforts to help pregnant teenager Shirley are hampered by red tape.
Gabriel denies Kerry's rape allegations and it seems even Cameron doubts the truth of her story, while Samantha faces a dilemma of her own.
It looks as if Gabriel's days as a vigilante could be numbered, and Sam turns to a police profiler for help in tracking down the serial rapist.
Cameron is plunged into emotional torment after failing to save the two children, while Sam's hunt for the Sun Hill rapist is jeopardised.
Recovering alcoholic Jim finds himself battling another addiction - gambling - and Phil gets a big surprise.
Kerry has a tense showdown with Gabriel, PC Steve Hunter antagonises his brother Phil and tragedy strikes when June is run over by Tony.
Gary goes undercover to learn about his brother's criminal activities, and Tony is tormented by his guilty conscience as June fights for life in hospital.
Gary tries to find his fugitive brother before the gangsters get him, a witness accuses Tony of reckless driving and Jim declares his feelings for June.
Andrea fears her true identity as an undercover reporter could be blown, Sheelagh's son is arrested for a homophobic hate crime, and Jim proposes to June.
Kerry tells Gabriel she believes he is the serial rapist, but he dismisses her threats and continues to goad Cameron.
The pressure mounts on Cameron as Gabriel demands he be expelled from Sun Hill, and he eventually decides to return to Australia.
Samantha uses every trick in the book to extract a confession from rape suspect Alan Kennedy before she is forced to release him.
Adam's life hangs by a thread following the attack on the community party.
A shocking discovery forces Sheelagh to reassess her relationship with Conor, and new CID recruit Gary Best goes missing while undercover.
Sheelagh tries to build bridges with Conor, only to be floored by another shocking discovery.
Ramani returns to CSU and is appalled by the way Phil Hunter has handled things in her absence, while Rachel exacts a violent revenge on Martin Grainger.
June and Jim prepare for their impending wedding, while Samantha is horrified to discover her daughter Abi is involved with a local criminal.
As June and Jim prepare to tie the knot, Evil Gabriel plays mind games with the pair and the past threatens to catch up with both of them.
Still working undercover, Kerry gets in way over her head after witnessing the death of a Radford escort girl and being ordered to give one of the others a beating.
Dale realises that Kerry has embarked on a foolhardy undercover mission to investigate the Radford clan and begs her to pull out before it is too late.
Gina learns of Kerry's undercover mission and vows to oust her from the force, while Sam fears the worst when her teenage daughter goes missing.
Sam begins to panic as all attempts to locate Abi prove fruitless, while Terry learns his brother Ben was also sexually abused as a child.
Terry tracks down the paedophile who abused him as a child, and Yvonne tries to stop pregnant teen Shirley from selling her baby.
Ramani fears Terry has taken the law into his own hands, while Neil and Andrea succumb to their mutual passion.
Investigations into the death of paedophile Malcolm Willard raise the alarming possibility that a serial sniper could be on the loose.
Andrea debates whether to cave in to pressure from her editor and deliver a sensationalistic story about the serial sniper.
New recruit DC Suzie Sim uncovers alarming evidence that Terry's nephew Bradley could be a victim of abuse.
Jim is spotted at a dog track by Steve and Honey, while Terry arrests his own brother on a trumped-up charge.
Meadows investigates the suspicious circumstances surrounding former colleague Ted Roach's death, helped by ex-coppers Bob Cryer and Alec Peters.
Neil steps into a convalescing Jack Meadows' shoes, Rob organises a disastrous raid on the Radfords' club, and Samantha receives a video of missing daughter Abi.
Gina orders Kerry to sever her ties with the Radford family or leave the Met, while the Sun Hill sniper claims another victim.
Kerry spots David Radford kissing someone else, Samantha fears the worst when a girl's body is discovered.
Kerry exacts revenge on David Radford by sabotaging his planned armed robbery, but Irene turns the tables by producing an incriminating tape.
Kerry goes missing, leading to speculation that David Radford may have made good on his vow to kill her.
After Kerry loses her fight for life, Gabriel sets about cold-bloodedly covering his tracks, while a grief-crazed Smithy swears revenge on David Radford.
The pressure mounts on Yvonne as her sister is roughed up and Shirley reappears in Sun Hill, while Andrea fears her cover is about to be blown.
Yvonne alerts CID after learning Beverley was assaulted by her husband, and Jack returns to Sun Hill, determined to reassert his authority after his heart attack.
New recruit PC Roger Valentine's old-fashioned attitude toward homosexuality threatens to ruffle a few feathers when he is partnered with Lance.
Gabriel's emotional outburst causes a stir at Kerry's funeral, and Jim fears his complicity in illegal goings-on at the greyhound track could be exposed.
Debbie is assigned a major case but the investigation takes second place to family concerns when she gets bad news about her son.
Kerry's father visits Sun Hill to collect his murdered daughter's belongings, reopening old wounds for Smithy who begins to see Gabriel for the psycho he is.
Wayne Radford's grave is vandalised, leading Gina to uncover the shocking truth about Irene, and Smithy tries to worm his way into Gabriel's confidence.
Rob embarks on a mission of vengeance after learning the truth about his father's murder, while Abi's kidnapper sends Samantha a macabre message.
The hunt for Abi's kidnapper takes on renewed urgency when it appears she is being held in a container with only a couple of hours' oxygen left.
Samantha realises Dr Hugh Wallis has brainwashed Abi when she refuses to name him as her kidnapper, and sexy new recruit PC Amber Johannsen arrives at Sun Hill.
Jim tells June about his debts, leaving her stunned by his betrayal and in no mood to enjoy her retirement party. Amber seduces virginal Steve.
Jim finally reveals the full extent of his gambling debts to June, causing her to storm off in disgust, while Yvonne discovers her sister has been attacked at home.
Gabriel has a violent confrontation with Smithy over Kerry's rape allegation, only to fall victim to the Sun Hill sniper.
New recruit PC Leela Kapoor shines on her first day, but a dark secret from her past jeopardises her working relationship with Sheelagh.
Jim sinks to a new low when he pawns valuable police evidence to raise the cash he needs to pay off his gambling debts.
Yvonne is shocked when an injured Shirley Moss is found in a crashed car containing a quantity of cocaine. Elsewhere, Mark asks Lance to marry him.
Yvonne faces up to the fact that she was wrong to throw Shirley out of the house, but as they make up fate deals a terrible blow.
The Sun Hill squad learn that Irene Radford is plotting one final raid.
Irene drives off with Gina at gunpoint and forces the inspector to let her colleagues know she means business.
Ramani is facing a staff shortage, so Jack lends her Terry to help investigate a suspected paedophile. Meanwhile, Lance is kidnapped on his stag night.