Actor Ryan Reynolds had to cut short his honeymoon with Blake Lively to start work on a new movie about the kidnapping of a young girl by a paedophile at the centre of a crime ring.

The Green Lantern star is promoting The Captive at the Cannes International Film Festival in France, and on Friday (16May14), he told reporters that he struggled to get into character for the film because he was on a marriage high - and his new wife joined him for the shoot in his native Canada.

Reynolds explained, "I dragged my wife from our honeymoon in Africa and landed her in Sudbury, Ontario in Canada when it was minus 40 degrees, at a roadside motel where we stayed for a month. She coped with it much better than I did."

But the actor admits he found a way to get into character very quickly - by talking to his brother, who is a Royal Canadian Mounted Police officer.

Director Atom Egoyan's film, which also stars Scott Speedman, Rosario Dawson and Mireille Enos, is in competition at Cannes.

Meanwhile, in other news from the festival, Harry Potter star Daniel Radcliffe has hit headlines after it was revealed he is in talks to star in the movie adaptation of Dave Eggers' bestselling novel You Shall Know Our Velocity, which centres on two friends' global journey with their late pal's ashes.