Josh Hartnett to star in new Sky Original limited series, The Fear Index

Photographer: Sarah Dunn

Sky have announced that internationally renowned actor Josh Hartnett (Penny Dreadful) is to star in the taut new Sky Original thriller The Fear Index based on the best-selling novel by Robert Harris. Adapted by Paul Andrew Williams and Caroline Bartleet, and directed by David Caffrey (The Alienist, Peaky Blinders), the fast-paced four-part limited series also sees Hartnett joined by Leila Farzad (I Hate Suzie, Innocent), Arsher Ali (The Ritual, Informer) and Grégory Montel (Call My Agent). Produced by Left Bank Pictures in association with Sky Studios, The Fear Index will begin filming this month in Hungary and will air on Sky Atlantic and streaming service NOW later this year.

Hartnett, also known for his role as Ethan Chandler in the much-lauded Sky Original series Penny Dreadful, will star as Dr Alex Hoffman, a computer scientist and genius who is ready to make a killing. Alongside his Hedge Fund business partner and best friend, Hugo (Ali), he's launching VIXAL-4 to investors - an AI-driven system that exploits fear in the financial markets and operates at lightning speed to make big returns. The promise is billions, the rich are ready to get richer... but this is not the day Alex and Hugo had planned on. What follows is a fast-paced journey through the worst 24 hours of Alex's life - cutting across reality, memory and paranoid fantasy, forcing him to question everything he sees with his own eyes.

In the pulse of Geneva's financial district, Alex's sanity is shaken after he is viciously attacked at his home by a man who knows all of his security codes. After more unexplained occurrences, Alex becomes convinced he's being framed. But as secrets surface from his past, will anyone believe that he isn't just losing his mind? Detective Leclerc (Montel), assigned to the case, struggles to work this former CERN scientist out, Hoffman's talented artist wife, Gabby (Farzad) might just be losing patience this time, whilst Hugo's only concern is the billion-dollar business on the line. Invention can be lonely, and in a modern world of AI, capitalism and technological breakthroughs, Dr Alex Hoffman might have to learn the hard way that it's not always easy to foresee how destruction evolves from creation.

The Fear Index will air on Sky Atlantic and NOW in the UK and Ireland.