In cold, final weeks of 1988, there was plenty of hard labor on the London set of Tim Burton’s “Batman,” but actor Michael Keaton had it easy, at least as far as inspiration — the star was in a solitary mode, roaming the streets before dawn just like the haunted masked man of Gotham City.
“It was a lonely time for me, which was great for the character, I suppose,” said Keaton, now 59, reflecting on the film that paved the way for the crowds of superheroes in cinemas today. “I would run at night in London just trying to get tired enough so I could sleep. I didn’t talk to people much. My little boy was a toddler, and the woman I was married to at the time, we were not together but we were trying to figure it out and get back together.