It's been one of the most popular murder mystery books of the last decade - and now online sleuths believe they have pinpointed where in Berkshire the film adaptation is underway. 

Richard Osman's cosy crime caper has sold more than 10 million copies worldwide since published in 2020. 

The novel follows four friends living in a retirement village as they attempt to solve a mysterious murder. 

Now their exploits are due to turned into a Netflix film, with Dame Helen Mirren, Celia Imrie, Pierce Brosnan, and Sir Ben Kingsley set to star. 

And residents in Theale believe they've spotted tell-tale locations from the plot popping up as sets in a country estate nearby. 

READ MORE: Reading Walkabout bar stabbing: Knife found in soldier's room in London barracks

On social media, one resident said they have seen a sign for 'Coopers Chase Retirement Village' - the name of the retirement village in the novel - at the Englefield Estate.

Meanwhile other people have posted that they have seen film crews and a 'new' graveyard - another key location in the book. 

Englefield Estate declined to comment. The Elizabethan country house and surrounding grounds have seeing film for productions such as TV series The Crown, as well as the films X:Men First Class and The King’s Speech.

Meanwhile, Richard Osman has posted on social media a picture of himself and Hollywood director Steven Spielberg against a backdrop that looks almost identical to St Mark's Church in Theale. 

Have you seen any filming around Englefield or Theale? Bumped into Pierce Brosnan while getting some milk? Said hello to Steven Spielberg at your local? 

Contact the Reading Chronicle if you have a fun story to share.