Mark Rylance: It is painful to delve into the past

For Mark Rylance, the opportunity to track the truth about the wartime life of his late grandfather seemed to be a way to get closer to a family member's memory. But it also accentuated a painful gulf between them to delve into that past.

"I knew him very well, but there was a lot that I hadn't heard of, even though I suspected some of it," Dunkirk's Oscar-winning star and Spies Bridge told the ....