Written by Jeff Pope (Mrs Biggs), the two-part drama will star Rory Kinnear (Skyfall, Black Mirror) as Lucan and Christopher Eccleston (Doctor Who) as John Aspinall.

Lucan will tell the story of Lucan’s exploits as a member of the infamous Clermont set and will focus on his marriage collapse to Veronica, the Countess of Lucan.

The official synopsis reads: “With his marriage disintegrating, Lucan became obsessed with regaining custody of his children. Ultimately the drama will reveal what happened on that fateful night in November 1974 when his children’s nanny, Sandra Rivett, was cruelly bludgeoned to death in the basement of the family’s home in London’s Lower Belgrave Street as she made her way to the kitchen to make a cup of tea.

“To this day Lucan is thought to have mistaken Sandra for his wife Veronica, whom he blamed for the fractures in his family life. His whereabouts and eventual fate have remained a mystery for nearly four decades, captivating and intriguing the public whose fascination with Lucan is undiminished.”

Executive producer Francis Hopkinson commented: “This extraordinary and tragic event has fascinated people for 40 years. Jeff Pope’s script, based on John Pearson’s book The Gamblers, brings new insight and revelations, which will surprise the audience. We are delighted that a top cast and director have come together to tell this story.”

Lucan will begin filming in and around London this month.

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