Famously secretive moviemaker Christopher Nolan refused to give the Irish actor any information about the 2005 film he was shooting and Neeson now admits he was more than a little frustrated.
He tells Wenn, "He takes secrecy to another extreme. I didn't know I was in Batman Begins. I went and shot a scene for two hours with Christian. It was a set and Christian was tied up.
"I said, 'Chris, what am I doing?' and he said, 'Well, just walk forward and say the lines, walk back and that'll be it really.' I said, 'What the f**k, tell me the story!' He said, 'Well, I'd prefer not to actually.'
"I mean, 'Ok, don't mind me, I'm just an actor'."
But Neeson was thrilled when he saw the fight sequence in the film and admits it was among the highlights of his career: "I loved the fight I had with Christian in Batman Begins because we were on this real glacier in Iceland and we had these glacier wranglers, believe it or not, who would ask us to get off if it started moving.
"You could hear the sound of this thing moving as it moved maybe a quarter of an inch and the guy would say, 'Ok, you can go on again now.'"