Luther (played by Idris Elba) has been missing from TV screens since the end of his fourth season in 2015.
Since then, fans have been eager to jump back to Luther's world and go into new stories that will include their favorite characters.
Tuesday will see the triumphant return of DCI John Luther, along with his unlikely partner Alice Morgan (Ruth Wilson).
And Ruth is excited to come back as her character again for the BBC show.
She announced, "I love to play her. It's a real pleasure for Alice.
"And I believe in the context of the show, it's quite useful to have a sign like that that can bring lightness to it."
Ruth went on to explain: "Even if she does dark things, she does it playfully, and I think the audience enjoys it for that reason."
Upon returning to dives in her character shoes again, she added, "I love to come back. The first day coming back was just a joy. It was great to see the old crew."
Ruth continued to expand his remarks and continued, "We have many characters left, so it was like an all-star reunion, and it has been very fun to do."
While it is still unknown who they are supposed to return characters to be, it is surely a shock to everyone.
Ruth concluded describing the upcoming season in five words and said, "The new season of Luther is violent, fun, fast, brilliant characters – ancient signs, new characters – there are more than five words, but I don't care!"
Fans of the show will remember that Alice apparently was abandoned for dead screening in the fourth season of the show.
Could this also point to what comes for the back characters of the show?
It looked like Justin Ripley (Warren Brown) was killed in season three by Tom Marwood (Elliot Cowan) – but could there be more to his attack than the viewers saw?
If Justin were to come back, he might be out to take down Luther after he allowed him to be caught up in a case that would ultimately see him shot.
Justin spent most of the season two trying to convince the police. Luther was innocent of Zoe's (Indira Varma) murder.
Meanwhile, Luther is still up against the notorious criminal chief George Cornelius (Patrick Malahide).
Luther first hit George as he tracked him down and chained him to a radiator to ask him questions.
But George retaliated by putting a price on Luther's head, causing the criminal underworld to attack the detective.
Can George be set to pick up some old Luther's five-year-old siblings?
Luther Season 5 will be released on January 1 at BBC One at 9pm