The Oscar-winning actor has revealed his wife of 20 years has interviewed his The Silence of the Lambs co-star Jodie Foster for the documentary. "(She has) carte blanche to (cover) everything," he added to People magazine. However, Hopkins knows rather little about his wife's project and has no idea how far along the documentary is. "I don't know. I don't ask her. It's quite a lot of film. I don't know when it's going to come out," he admitted. At the same time, the 86-year-old has been hard at work on a memoir.