Matthew Rhys has admitted he is feeling the pressure of taking on the role of Mr Darcy, and is worried about disappointing fans.
The Americans star has been cast as Mr Darcy in a new BBC adaptation of PD James' Pride And Prejudice murder mystery spin-off, Death Comes To Pemberley.
Matthew confessed: "It's a bit of a worry. Regardless of Colin Firth or Matthew Macfadyen or Laurence Olivier or whoever else has played him, so many people have read the book. They have an incredibly special relationship with Darcy, they have a very clear idea of who he should be. So you're concerned that you're only set up for disappointment."
"I'm a glass half empty man..." he added at the Glamour Awards after-party sponsored by Cointreau.
Colin Firth became a heartthrob playing Darcy in the BBC's 1995 adaptation of Jane Austen's Pride And Prejudice, while Spooks star Matthew Macfadyen played him in director Joe Wright's film adaptation in 2005. Laurence Olivier played him in the 1940 big screen version.
Matthew will star alongside Anna Maxwell Martin as Elizabeth Bennett and Matthew Goode as George Wickham in the three part drama, which will begin filming on location in Yorkshire later this month.
He said: "The good thing about it is, it's not Pride And Prejudice Darcy, it's a different Darcy so I can't be held up as a mirror image to Mr Firth."
The Brothers And Sisters star is currently appearing with Keri Russell in new ITV drama The Americans, about a pair of Russian spies living undercover as a couple in Washington in the 1980s.
He admitted the espionage thriller was a lot more fantastical than hit US drama Homeland.
Matthew said: "It's fantastical - you do ask a lot of the audience to go with you on the journey. But as fantastical as it is, it's only two weeks ago they caught a CIA operative in Moscow with two bad wigs and a suitcase full of cash! So at least you can say we're topical."