Stephen Graham has joined the cast of 'White House Farm'.

Stephen Graham

Stephen Graham

The 'Save Me' star is set to play police officer DCI Thomas 'Taff' Jones in the ITV thriller, which will tell the real-life story of five family members who were killed in their Essex farmhouse in August 1985.

A TV insider told The Sun's Bizarre TV column: "The role of Taff isn't a straightforward one - it's a complicated part Stephen can really get his teeth into."

The killings saw couple Nevill and June Bamber shot inside their home along with their adoptive daughter Sheila Caffell, and Sheila's six-year-old twin sons, Daniel and Nicholas Caffell.

Prince Harry's ex Cressida Bonas will play Sheila, who police first suspected had fired the gun shots and then killed herself.

However, her brother Jeremy Bamber - who will be played by Freddie Fox - was jailed for the murders in October 1986.

This news comes just days after Stephen signed up to star in police corruption drama 'Line of Duty', alongside his 'This Is England' co-star Vicky McClure, who plays DS Kate Fleming.

A source recently said: "It's a huge coup for Stephen, even as someone with his long CV.

"Not only is 'Line of Duty' one of the hottest dramas on TV but he's also following in the footsteps of a long line of high-profile signings, including Keeley Hawes and Daniel Mays.

"Producers are also thrilled to have him on board and have a very exciting story lined-up.

"Just as he did in 'Little Boy Blue' recently, he's sure to have viewers glued to their edge of their seats."

The 44-year-old actor previously admitted the audition process and subsequent rejection is "f***ing horrible" and he'd advise anyone starting out in the profession to develop "skin like a rhino" because the looks and comments can be hard to cope with.