Benedict Cumberbatch will serve as executive producer for a new six-part limited series “The Annecy Murders”, based on the real-life Chevaline killings that shocked the world in 2012.
The drama, inspired by true events, centres on the still-unsolved murders of a British-Iraqi engineer, his wife, her mother, and a French cyclist, who were all gunned down on September 5, 2012 near Lake Annecy in the French Alps.
Two young girls, aged four and seven, miraculously survived the attack but were not discovered by first responders for hours.
The case triggered a sprawling, multinational investigation involving authorities in France, the UK, Spain, Israel, Switzerland, and Iraq. Hundreds of officers were deployed and nearly a thousand witnesses interviewed.
The mystery regained public and media attention last summer when French investigators officially reopened the case.
According to The Hollywood Reporter, the series is being produced by Carrousel — the company founded by Louis Leterrier, Omar Sy, and Thomas Benski — in collaboration with Cumberbatch’s SunnyMarch and Bob Cooper’s Landscape.
“When we first came across this story, we immediately saw its incredible potential,” said Cooper. “It’s a haunting case that has everything — a compelling mystery, international intrigue, and profound human drama. It demanded to be told.”
Cécile Gaget, executive producer at Carrousel Studios, added, “This was a no-brainer for Carrousel. With the recent reopening of the case, the international resonance, and the unique cultural perspectives on the investigation, we are committed to delivering a powerful and authentic narrative.”
Filming is set to begin across France and the UK in early 2026. However, casting details remain undisclosed.