'I'm very very Irish and when I got there I instantly felt connected to it and the people' - Rooney Mara
Hollywood star Rooney Mara has said she loved working with "mad hatter" Jim Sheridan on A Secret Scripture.
A host of well-known faces, including Vanessa Redgrave, Theo James and Eric Bana, filmed the movie in Dublin and Kilkenny earlier this year.
The film is based on the Sebastian Barry novel of the same name and tells the story of Roseanne McNulty, who recounts her life and her experiences in a psychiatric institution.
The Girl With The Dragon Tattoo star said filming in Ireland was "an amazing experience" and she loved working with Jim, who is best known for directing In America and My Left Foot.
"I'm very, very Irish and I'd never been there before. When I got there, I instantly felt connected to it and to the people," she said.
"[Jim] is just mad as a hatter, I love him, it was a really fun experience."
Despite starring in a host of blockbusters, Rooney said she was hit with a dose of nerves about mastering the Irish accent.
Homegrown stars on set included Jack Reynor, Aidan Turner and Tom Vaughan Lawlor.
"There were so many incredible Irish actors on the film and it was a little intimidating," she told RTE Ten.
"Especially as it's kind of a difficult accent to do and it was a little intimidating to do the accent around them at first, but they were all so lovely and generous and sweet."
Jim previously said he didn't know when the film would be released because Rooney was promoting her new movie, Carol. Directed by Todd Haynes, that the film is a romantic drama centred on the relationship between Therese, a young shop worker, and Carol, an older, married woman.
Mara said she relished working opposite Oscar-winner Cate Blanchett. "I feel like my entire performance is just in reaction to her and in the sense it was very easy because I couldn't have asked for anything better to be reacting to, she's just incredible," she said.
Mara previously passed on the part of Therese but said she was "so happy" the part came back to her. Carol is in cinemas from today.