(Cover) - EN Movies - Tilda Swinton says her new film shows that families are a bloody business.

The British actress can next be seen in We Need to Talk About Kevin which is being shown at the Cannes International Film Festival.

The 50-year-old stars as Eva in the film which is based on the best-selling book by Lionel Shriver. Tilda plays a mother who recounts the events leading up to and following her sons massacre of students and teachers at his high school.

Tilda, who stars alongside John C. Reilly in the film, believes that the storyline highlights that family units can be a complex subject.

"There's this fantasy that motherhood is this pink and fluffy business that's all hearts and Mother's Day cards. Actually, anyone who has a family at all will know that's not true. Families are bloody businesses. Mortality is a bloody business, she said in an interview with the BBC. "The film looks at feelings, not facts. It's very much told from Eva's perspective as a mother, and the guilt and shame she feels, but it's a fantasy and a horror story, not a movie about social realism."

The Oscar-winning actress admits there were concerns about securing the funding for the movie, which is directed by Lynne Ramsay, because of the complicated subject matter.

Tilda has revealed that for the film to be screened at the Cannes International Film Festival exceeds the cast and crews wildest expectations.

"The material is taboo status, the concept of a mother who doesn't like her son. But it was a gamble we had to take, and we took a chance on audiences liking it," she explained. "We struggled to make a very little movie in terms of money. But by getting into Cannes, we have given it the best shop front in the world," she says. (C) Cover Media