DS Steve Arnott is arrested on suspicion of murder but continues to protest his innocence. Does DC Kate Fleming's undercover operation hold the key to Steve's guilt and the identity of the Caddy?
Jed and Ryan investigate when six-year-old Ella sees an unknown child calling out to her from a darkened corridor, and Kate continues to experience more nightmares.
AC-12's loyalties are divided when DS Steve Arnott comes under scrutiny from his colleagues. With his career in jeopardy, Arnott turns to an unlikely source for help.
As AC-12 wrestle with the new forensic evidence casting doubt over Tim Ifield, Kate is approached by another woman claiming to have been assaulted by Michael Farmer. While Steve fumes over this contradictory testimony, Kate uses her newfound respect to inveigle herself with the Trapdoor team. Meanwhile, Steve challenges Roz's husband Nick to vouch for his wife's whereabouts on the night Tim Ifield went missing. With Nick proving evasive, Steve senses a whole new angle on the investigation.
Mickey's got a plan and this one is like no other. They're going to steal the Crown Jewels. Will he be able to get the others to join him on such a dangerous mission?
When Stacie claps eyes on her estranged husband Jake who left her five years ago taking everything she owned with him, she's certain he is to be the gang's next mark. Having graduated from the short con world to the professional poker circuit, he's good and he won't be an easy target. But the team swears to exact revenge on him for Stacie. Is Stacie really prepared to leave her friends for love? Or has she really got another card up her sleeve....?
The police drama set in London's East End continues with the second of a two-part story. A second mass murder occurs with no signs of an obvious break-in and no forensic evidence for Chandler and the team to use. The crimes begin to take on an almost supernatural edge and local residents wonder how they can sleep soundly in their beds when doors and locks offer no protection from whoever is responsible.
Poirot investigates a strange and gruesome murder of an elderly psychiatrist. Ariadne Oliver is pressed to try and uncover the truth behind two decade-old deaths. They soon find out that their separate investigations are linked and work together to try and solve the mystery.
Roz's husband Nick is brought in for questioning by AC-12. But while Nick denies any involvement in Steve's attack, his suspicions about Roz mount. Meanwhile, AC-12 discover new anomalies in the forensic evidence and issue DCI Roz Huntley with a second Reg 15 notice. AC-12's case appears watertight until Roz starts dismantling their evidence with inside information of her own.
Fresh testimony launches AC-12 back on the trail of the Caddy, a corrupt officer with links to organized crime. But new disturbing evidence suggests the Caddy may reside within AC-12.
DI Chandler and DS Miles investigate the slaughter of four people at a tailor's fortified workshop. Ed Buchan, retained by Chandler as the team's historical adviser, believes that the huge archive at Whitechapel station will provide the necessary insight into this baffling crime.
Leah suffers with some spooky experiences. Kate finds out that Leah is harbouring a dark secret.
Harry and Ellen are enjoying their new love affair and dance into the night at an apartment that Harry has got Ellen. She ends up talking about her father and reveals that her real name is Joyce. Agnes's nasty drunk father called Reg has been fired from his job and he ends up losing his temper with his daughter, hitting her across the face.
Harry scores something of a coup when prima ballerina Anna Pavlova agrees to pay Selfridges a visit. However, Agnes's job looks to be under threat when a violent Reg reaches breaking point and gatecrashes the event - and things only get worse when Ellen invites herself along. Meanwhile, one of the department store's most loyal employees is caught stealing, a formidable new head of fashion arrives and Rose reveals her true identity to Roddy.
D'Artagnan must protect King Louis when a notorious criminal kidnaps them both.
The Musketeers must rescue a French general from an impenetrable Spanish prison.
After a former lunatic asylum is converted into new luxury apartments the spirits of the former inmates return to haunt the new residents after they move in.
Bill seeks his wives' advice regarding the video poker business. Barb tries to reconcile things between Sarah and Heather. Meanwhile, Lois seeks revenge on Frank.
Lenny is alerted to the recent arrival of a notorious Albanian gangster Tarek Sokoli. Sokoli wants to put down roots in his new homeland and that includes running drugs and prostitution rackets. Rather than have him killed, Lenny instructs Mercer, Rose and Calum to scare him away - to send the message to any others planning on setting up in London that their attempts will fail. He wants them to work as a team. Calum frees the prostitutes that Sokoli’s crew had illegally shipped in by returning their passports. However, after one of the liberated girls is killed, and a heroin importer is murdered by Sokoli’s lieutenant after Mercer convinced him against doing business with the Albanians, the unit begin to realise that simply executing Sokoli would have created far less bloodshed.
Calum has made Mercer some tea. Problem is that it’s burned and totally lacking in nutritonal value. So off they go to the supermarket. Calum is amazed Mercer knows so much about cooking. Lenny appears and Mercer's heart sinks. He gives Mercer his next assignment. He must kill a violent criminal just acquitted of the murder of a young woman, Marie Greene. His name is Scott Glover. Mercer finds him at a hotel and prepares to kill him in the gentleman’s toilets. But his plan is fraught with problems. One of which is that a dogged and brave reporter knows more than he should about the case.
Teddy meets his ex-wife Julia and tells her about his journey to Kosovo where he tried to get Serbians and Albanians to work together, but learned that the hatred runs deep.