Idris, 45, was last seen as the detective in the fourth season, which ended in 2015.
Emmy-nominated writer of the show, Neil Cross, has revealed the new instalment will be more dramatic than ever.
The 48-year-old divulged: “We missed John Luther. We missed some old friends. And we wanted to make the biggest, scariest, darkest, most thrilling series of Luther there’s ever been. So that’s what we’ve come back to do.”
Idris has expressed his excitement at resuming the role and stepping back into Luther’s iconic outfit.
“It’s good to be back in London, back in the coat,” he divulged.
While familiar faces such as DSU Martin Schenk (played by Dermot Crowley), Benny Silver (Michael Smiley), and George Cornelius (Patrick Malahide) will be returning, the drama is also gaining a new star.
Wunmi Mosaku has joined the cast as new recruit D.S. Catherine Halliday who will partner up with Luther to tackle London’s monstrous murders.
The 31-year-old actress won the BAFTA award for Best Supporting Actress for her portrayal of Gloria Taylor in BBC television film Damilola, Our Loved Boy.
Piers Wenger, Controller of BBC Drama, said: “It’s fantastic to have Idris Elba and the team back filming in London and we are thrilled that the exceptional Wunmi Mosaku will be returning to BBC One to join this already stellar cast.
“Neil Cross’ scripts for this fifth series of Luther are explosive, and fans won’t be disappointed.”
A launch date for the programme has not yet been disclosed, but viewers can expect a very dramatic return for the four-part series.
Luther season 5 will return to BBC One.