Tilda Swinton on film We Need To Talk About Kevin

Actress Tilda Swinton and actor John C Reilly explain why they wanted to star in We Need To Talk About Kevin.

The film is an adaptation of Lionel Shriver's book, which tells the fictional story of a school massacre.

The film is in competition at this year's Cannes Film Festival.

Film clip courtesy of Diaphana Distribution.