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.
New. New DC Stevie Moss brings a breath of fresh air to CID with her positive and lively outlook, but manages to upset Mickey on her first day by stealing his parking space.
New. A student barmaid reports being attacked in the park on her way home from work. Kezia recognises a familiar face on the list of suspects and Sally agrees to go undercover.
New. An 11-year-old is abducted, leading to fears a copycat child killer is on the loose. Convicted murderer Linda Johnson gives Neil the name of a prime suspect.
New. Heaton calls a press conference to tackle the growing media interest in Linda Johnson's involvement in the abduction case.
New. Smithy helps the victim of a knife attack on the Jasmine Allen estate and renews acquaintance with Carly Samuels, who witnessed the incident.
New. Smithy battles to save Carly's life following the shooting. A mobile unit is set up on the estate to help with community problems in light of the gang violence.
New. Diane and Nate investigate an attack on a doctor on the Jasmine Allen estate and discover that one of his colleagues has been performing illegal operations.
New. Carly's funeral descends into chaos as the unruly crowd taunts chief suspect Tito Morientes, and a gunshot shatters the glass of the hearse.
New. Tito Morientes is arrested on the testimony of Alisha Danniels for shooting Carly Samuels, but with Dwayne Fox on the run, the team must protect their key witness.
The hit-and-run attack leaves Alisha Danniels too shaken and terrified to testify against Morientes and Fox, but she does identify the third man.
Tension mounts as Fox and Morientes stand trial for the murder of Carly Samuels and Smithy is furious to learn a key witness has retracted his statement.
Smithy finally gets his witness to court to testify against Fox and Morientes, but defence barrister Sunil Davdra pulls her testimony apart.
Gina clamps down on hoax calls following a string of humiliating set-ups by teenagers and Nikki investigates the kidnap of two children by their suicidal father.
Sally and Ben are shocked to find a 12-year-old at the wheel of a stolen vehicle belonging to a known violent offender.
Ben is incensed to find his protege Liam Harvey badly beaten after CCTV cameras reveal the lad was responsible for ditching bags of cocaine in the street.
A teenage runaway befriends vagrant Jimmy Chadwick and finds himself caught up in a shooting involving a professional hitman who seems determined to finish the job.
A club owner looks certain to escape rape charges for the third time in his seedy career when Sam agrees to drop charges in return for information about a major drug dealer.
A woman reports seeing a body thrown into the river, and a search recovers the remains of a doctor who was recently exonerated from charges of professional negligence.
Heaton upsets everyone by deciding to join his PCs on the beat, which couldn't come at a worse time for Beth and Emma, who are nursing monumental hangovers.
Sally is caught up in a nightclub brawl and helped by an undercover officer from another station, who turns out to be the instigator of the disturbance.
Stevie and Mickey are served a sharp reminder of just how deceptive appearances can be when a violent burglary on a pensioner produces the most unlikely suspects.
Beth gets a lead on a dealer and persuades Max to let her collect more evidence by posing as a party girl - but ends up finding more excitement than she bargained for.
Stevie and Stuart attempt to arrest a brothel keeper for the murder of a prostitute, but find themselves in danger when the suspect brandishes a heroin syringe.
Stuart faces an anxious wait for the HIV test results after being stabbed with a needle by Danny Peters. Jack is surprised when the DS turns up for work as usual.
An ageing gangster tries to rescue his grandson from a life of crime, but the die is already cast.
Smithy and Max investigate the killing of Jacko Jackson, but the list of suspects continues to grow.
Following an armed robbery on an antiques shop, Jack agrees to go undercover to nail the dealer responsible for selling the goods - and faces a stern test of his credentials.
A man is arrested for attempted murder, but claims he only hit out with a hammer to fight off two knife-wielding intruders. Emma bends the rules to prove he is innocent.
DC Jacob Banks joins the team in time to investigate the murder of a private detective, while Callum's animosity toward Emma grows.
Sally works undercover in a City trading house to investigate the disappearance of 21-year-old Geraldine Lawson, while Emma tries to prove herself to Callum.
Emma and Sally are first to respond when explosions rock Sun Hill. John and Gina monitor the carnage from the station, while Callum takes charge on the ground.
The Sun Hill team come to terms with Emma's death and Callum's guilt leads to a fight with Smithy, while Sally can only weep after arresting the chief suspect.
The Sun Hill watch pay their respects at Emma's graveside and Callum vows to track the bomber down. Another alert gives him a chance to show his bravery.
Neil's return to work goes from bad to worse when a jilted bride takes a swing at her cheating bridesmaid - and catches the unwary detective by mistake.
Nikki takes a different approach to interrogate a boy whose missing father is mixed up in a drug dealers' turf war and under pressure from an unscrupulous loan shark.
Tensions between Terry and Max are brought to a head when they find themselves stuck in a traffic jam and witness a fatal stabbing.
Beth bonds with teenage runaway Lucy Burton, whose family clearly have much to hide, and Sally annoys her colleague by warning her not to get personally involved.
Beth is distraught when Lucy Burton's body is found in an apparent suicide. Terry discovers the victim's housemate has a history of beguiling and controlling girls.
New constables Leon Taylor, Millie Brown and Arun Ghir have a busy day when a stolen cutting torch is used in a bank robbery.
A woman's body is found on a landfill site, but the investigation reaches deadlock when the three main suspects all come up with cast-iron alibis.
After a game of poker with friends, Jack is horrified when a speeding motorist deliberately runs over one of the party - his godson Kieron.
During an investigation into an arson case, Mickey is stunned to discover the attractive solicitor giving him a hard time in the interview room is Banksy's wife.
A drunk driver injures a teenager in a hit-and-run incident and officers assume the frantic woman giving a statement is the girl's mother - until the case takes a strange turn.
When a teacher is found unconscious, investigations reveal he has been having an affair with a pupil - who has subsequently been registered as a missing person.
Martin Jarvis guest stars as a car dealer impaled by a scaffolding pole, which fell from a block of flats. Nikki and Will suspect it may have been a deliberate attack.
New Sun Hill team member Sgt Rachel Weston joins forces with Mickey and Mel to investigate links between a road traffic accident and a break-in at a jewellery shop.
Rachel and Nate chase a man seen standing over the body of a woman in an alleyway. Will impresses Terry on his first day as a trainee Detective Constable with CID.
A joyrider is horrified to learn she has been carrying a dead body in the boot. Millie and Nate discover the victim is linked to suspected rapist Tom Norris.
Shaun Williamson guest stars as East End crime kingpin Dave Monks, who is kept under surveillance while planning to receive a massive shipment of cocaine.
The undercover operation to entrap gangster Dave Monks goes awry when Max discovers the 'special delivery' he is supposed to be handling is not in the van.
Sally makes an unsuccessful attempt to retrieve evidence from a tower block scheduled for demolition, and later consoles herself by drinking too much at a club.
Ben and Callum try to cover for Sally after she is involved in a drink-driving collision that puts a teenager's life in danger.
Investigations into an assault on a drug dealer lead the Sun Hill team to Jay Newman, whose family are in the care of the witness protection scheme.
Eddie Olosunje suggests Jay Newman's death may have been suicide, but the discovery of the lad's stash of heroin suggests someone was after him.
Banksy is shocked to learn that his lawyer wife Naomi has been mugged by someone who appears to hold a personal grudge against her.
Banksy and Naomi are alibied for the serious assault on Henshaw. The case is re-opened after it turns out Finch was having an affair with Henshaw's mother.
More crime-busting drama at Sun Hill police station. Suspected rapist Tom Norris is on trial, and is bailed when two witnesses meet.
Norris's housemate Dan Cox falls under suspicion in the rape case when evidence reveals he once covered for his friend to help him avoid harassment charges.
A shoplifter is found in possession of forged bank notes and Gina is tempted to bend the rules in a bid to trace the mastermind behind the operation.
Callum realises a bank job resembles a case he once solved, and the prime suspect still holds a grudge against him - not least because they were love rivals.
A stabbing victim accuses the husband of a woman he once had a brief affair with, but forensic evidence reveals his wounds are self-inflicted.
As stalker Jake Quinn holds Smithy and two schoolgirls hostage, a shot rings out and Gina fears her last day with the Sun Hill team will be marred by tragedy.
Rachel takes up her duties as an Inspector by organising a joint raid with CID on a crack den, where a frightened young girl is found boarded up in the fireplace.
Rachel is frustrated when two brothers offer different versions of the stabbing of a drug dealer. Will gets a chance to impress Neil, who makes him an interesting offer.
A hysterical mother reports her eight-year-old daughter missing, but when a body is discovered the only two suspects are released for lack of evidence.
Evidence reveals Mason Kemble was present at his classmate's murder and Neil arrests him. Grace becomes frustrated as she struggles to get the truth out of the boy.
Will joins the CID team as a trainee, and tackles the case of a developer who goes missing after threats from anti-capitalist protesters and a protection racketeer.
Arun is incensed when a gang on the Bronte estate sets upon a young couple - but he is taken in by one of the local youngsters, who draws him into a humiliating trap.
Long-running drama with the bobbies and detectives at London's Sun Hill police station.
A barrister's daughter with a cocaine habit is pushed out of a car by her supplier when she doesn't settle her debts. Terry goes undercover at the suspected dealer's cab company.
Working undercover as a cab driver, Terry is caught up in an international kidnap plot which forces Sun Hill to work closely with their continental colleagues.
Jack and his team follow the gang to Germany and help arrange a ransom pick-up at Leipzig railway station, but the case takes an alarming and violent turn.
Tony supervises Nate's driving assessment, which turns into a pursuit of a stolen vehicle and leads to a major case after the car is involved in a hit-and-run.
When a teenage runaway is found dead from an overdose, prints on the syringe suggest she was murdered. Investigations lead to a gang trafficking young girls.
Mickey and Jo organise a sting to catch the ringleader of the network trafficking teenage girls, but are forced to release him due to a lack of evidence.
Stevie helps Stuart uncover a Christmas burglary scam operating from a Santa's grotto run by an ex-con, and investigations lead to an unexpected meeting.
Stuart encourages Stevie to work undercover as heroin dealer Rob Towler's girlfriend, not realising the chemistry that still exists between them.
Stuart finally catches up with Stevie and Rob, and his suspicions are confirmed when she turns a gun on her colleague and makes her escape.
Stevie reveals to Stuart why she rescued Towler and makes plans to flee the country, but the violent gang pursuing them seems to be two steps ahead.
Mel's younger brother and his girlfriend come to stay for New Year's Eve and she believes they are out happily celebrating - until there is a stabbing at a nightclub.