Luther: The Fallen Sun

Wealthy trader David Robey, portrayed by Andy Serkis, reveals his true nature as a ruthless serial killer when he blackmails and kidnaps cleaner Callum Aldrich. This heinous act sets off a series of events that draws in law enforcement and devastates families.

DCI John Luther, played by Idris Elba, becomes involved in the investigation to rescue Callum. He reassures Callum’s mother, Corinne, that he will bring her son back safely, demonstrating his commitment to justice despite looming dangers.

In a shocking turn, Robey uncovers Luther's past illicit actions as a police officer, leading to Luther's dismissal from the force. This revelation paints Luther as a flawed hero, struggling with his moral convictions.

Years later, Robey stages a horrific event by luring the families of his victims, including Corinne, to a desolate house where he burns their children's remains. This act of evil devastates the families and solidifies Robey’s status as a monster.

Grief-stricken Corinne visits Luther in prison, expressing her anger towards him for his failure to capture her son’s murderer. This confrontation highlights the emotional toll and personal stakes involved in the case.

Robey twists the knife further by sending a recording of Callum's murder to Luther through a smuggled radio frequency in his cell. This mind game emphasizes Robey’s meticulous planning and obsession with power over Luther.

Desperate for justice, Luther contacts DCI Odette Raine, now leading the Serious and Serial Crime unit. Raine dismisses Luther’s warning about Robey, labeling him as a 'dirty cop,' which isolates Luther and complicates the investigation.

Determined to stop Robey, Luther conspires with prison staff to orchestrate his escape during a chaotic transfer. This risky move underscores his desperation and willingness to breach the law for justice.

Meanwhile, Raine’s team begins to uncover a sinister online 'red Room' involving the fates of kidnapped victims across Europe. This development broadens the scope of Robey's sadistic influence and reveals the widespread nature of his crimes.

In a shocking escalation, Robey kidnaps Raine’s daughter, Anya, forcing Raine to reluctantly partner with Luther. This desperate situation highlights the personal stakes and urgency as they race against time to save her.

Luther ties Robey to a disfigured woman named Georgette, revealing a disturbing pattern in Robey's life. This new lead gives them critical insights into Robey's motivations and methodologies, deepening the investigation.

The chase leads Luther and Raine to Robey's rural mansion in Norway, which hosts his horrifying 'Red Bunker' events. Here, captives suffer for the sadistic entertainment of online viewers, showcasing the depths of Robey's depravity.

In a climactic encounter, Luther and Raine confront Robey at a frozen lake, leading to a deadly struggle. The battle culminates with Robey's demise, as he sinks into the depths, but not without significant scars left on Luther.

After being rescued by local authorities and Schenk, Luther faces new challenges back in London. A mysterious MI5 figure named Cranfield presents Luther with a tempting offer that could change the trajectory of his life.