Jason Isaacs reveals what made him most anxious on 'Harry Potter' set

Jason Isaac recalled his time on the set of Harry Potter films as Darco Malfoy's father.

The actor, who joined the franchise for the 2002 installment, talked about the part of Harry Potter that made him anxious even after being seasoned artist on the set was working with his "heroes."

“The most nerve-racking is that all of the actors in the films were my heroes,” Isaacs said in a Broadway talkback on Thursday, May 1. “They’re people I queued up in the rain to watch on stage, mostly.”

“My very first-day proper day was with the late great Richard Harris, who played Dumbledore in the first two films,” Isaacs recalled.

However, it was not the first time meeting the acting legend. “I went to drama school with his son, Jared Harris, and the days when Richard Harris came to watch us at drama school were days you wore four pairs of underpants.”

“To be standing opposite [Harris] was incredible,” he added.