The first of four new 60-minute episodes will air on July 2 at 9pm

Luther is to return to BBC One for its third series next month (July).

The first of four new 60-minute episodes will air on July 2 at 9pm, the BBC has confirmed. Scroll down and click ‘play’ to watch the trailer for Luther‘s new series.

The first episode will find the obsessive detective played by Idris Elba torn between two cases: one involving a “twisted fetishist” copycat killer, the other an investigation into the murder of a “malicious internet tormentor” who is found dead in his flat, which has been stripped of his possessions.

Meanwhile, Elba has revealed that events across the series could have a profound effect on his character. “Lots happens in this season, lots of bad stuff,” the actor teased recently. “I don’t know where it’s going to leave Luther, he’s not a fragile man, but he might end up becoming fragile after what he goes through.”

The first series of Luther ran for six episodes on BBC One in summer 2010, followed by a second series of four episodes in summer 2011. The show has also been a hit in the US and Elba won a Golden Globe last year (2012) for his performance in the title role.