Sherlock star Louise Brealey has opened up about her co-star Benedict Cumberbatch, praising his "technical brilliance".
The actress, who plays Molly Hooper in the BBC series, told The Evening Standard: "He has a technical brilliance that you then entirely forget when you're seeing his work."
She also praised Martin Freeman's acting skills, saying: "The man's a robot, but in the most brilliant way. He's so precise - everything is thought through."
The stars reunited for a special Victorian episode of the show, and Brealey said it "instantly" felt right.
She explained: "It was amazing to see Ben and Martin in the clothes you associate with Holmes and Watson.
"I thought it would feel like a jolt and look really weird, but almost instantly it just felt right. It wasn't strange at all."
The 90-minute Sherlock special will air later this year and will be followed by a new long-awaited three-episode series.