My worst moment: The time Dermot Mulroney was so unprepared, his co-star laid into him

Dermot Mulroney is in Australia shooting his next project and, because of his schedule, that meant talking to the Tribune by phone at 5 a.m. his time. That’s nothing new for actors, he said. “Even my own near-90-year-old mother turned to me a year or so ago and said, ‘Dermot, you really have been getting up early all these years.’ So I was really touched, 38 years into my career, by the acknowledgment that there’s a little more involved than just standing there and smiling,” he deadpanned.

These days Mulroney can be seen as Detective Bailey in “Scream VI,” which he describes as more than a scary movie, but also a whodunit. “It really keeps ‘Scream’ in its own space in the — what do you want to call it, bloody massacre movies? — but that’s part of their point. ‘Scream’ tends to have more humor than other franchises, but the main thing for me is