Four years have passed since Reid bayed for Drake to end the life of Jedediah Shine. Four years that have seen the crime-fighting axis of Reid, Drake and Jackson split and isolated from one another. Drake has left London for Manchester to become the policeman - and man - he felt he could no longer be in Whitechapel. He is an Inspector himself now. Jackson has reverted to the man Reid plucked out of the Tenter Street brothel, a two-penny, sawbones, clap-doctor. And Reid has succumbed to his own shame and isolation, policing Whitechapel with a level of forensic detail and dedication that leads Chief Inspector Fred Abberline to fear for his old friend's mental well-being.

Meanwhile, Long Susan has made good on her threats to both Captain Jackson and the dying Silas Dugan - she has separated from her husband, taken command of Duggan's criminal empire and turned it into a legitimate property empire of huge philanthropic ambition. But such aspirations are costly, as her loyal but scheming solicitor Ronald Capshaw knows only too well.

All these resentments, fears and ambitions are soon forgotten, however, when two trains collide on the newly constructed bridge above Leman Street. It is a catastrophe which falls into Reid's world and demands explanation. His pursuit reunites him with Drake and Jackson and sets him on his own collision course with his past and with the secret crimes of Long Susan and Ronald Capshaw.

The new season sees Edmund Reid (Matthew Macfadyen), Detective Inspector Bennet Drake (Jerome Flynn) and surgeon Captain Homer Jackson (Adam Rothenberg) reunited to restore the peace of the blood-stained streets in London's East End.

Picking up in in the summer of 1897 with Queen Victoria celebrating her diamond jubilee, Reid, who has retired from his detective work, finds himself drawn back to Whitechapel after discovering that an old friend is set to hang for a brutal murder he's convinced he hasn't committed. Meanwhile, Detective Inspector Bennet Drake has now risen to the Head of H Division, holding a position of trust and status in Whitechapel. Moreover, he's now married to the love of his life, Rose Erskine (Charlene McKenna, Skins). Also returning this season is MyAnna Buring (Prey, Downton Abbey) as Jackson's wife Long Susan Hart - now only weeks away from being executed for her part in the locomotive disaster that killed 55 people. Time is running out fast for Long Susan - will her husband find a way to help her escape the death sentence before it's too late?

"Ripper Street" returns for a fifth and final season with six episodes. The powerful closing chapter picks up mere days after the grisly death of Detective Inspector Bennet Drake (Jerome Flynn - Game of Thrones), which reunites his old friends, Detective Inspector Edmund Reid (Matthew Macfadyen - Anna Karenina), surgeon Captain Homer Jackson (Adam Rothenberg - The Divide) and 'Long' Susan Hart (MyAnna Buring - Downton Abbey), to bring his murderer to justice.

Last season introduced a new serial killer plaguing the streets of Whitechapel. Convinced that the murderer's cannibalistic crimes were being covered up by another party, DI Reid and DI Drake's investigation pointed to a trail of corruption that led them right to the heart of Scotland Yard - specifically Assistant Commissioner Augustus Dove (Killian Scott - Call the Midwife) and his bestial brother Nathaniel Dove (Jonas Armstrong - Line of Duty). During an attempt to bring down the Dove brothers, DI Drake lost his life to serial killer Nathanial, forcing DI Reid, CPT Jackson and 'Long' Susan on the on the run. Now, finding themselves on the other side of the law, revealing the truth about the unlawful siblings is not an easy task.

With a barbarous killer on the loose and a corrupt lawman leading the police force, DI Reid is unquestionably facing his toughest and most dangerous challenge yet. An epic battle on the meanest streets imaginable has just begun... Will DI Reid finally be able to restore peace and justice in Whitechapel?