Jason Isaacsalways strives to get inside the heads of his characters, even when he loathes them.

“My job wasn’t being in a franchise.

“As much as it was fantastical, I always take the acting incredibly seriously,” he explained.

Jason Isaacs as Lucius Malfoy, and Tom Felton as Draco Malfoy in Harry Potter and the Chamber of Secrets

Peter Mountain/Warner Bros

It was heartbreaking and humiliating.

I don’t know how to phone a performance in, really.

That felt like serious acting.

Harry Potter and the Deathly Hallows: Part I (2010) Jason Isaacs as Lucius Malfoy

It didn’t feel like we were in something silly.”

Effort doesn’t always neatly translate to enjoyment, however.

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“It’s quite boring making big special effects films; however, the pleasures all come afterward.

Some people say their lives were saved by it, and I believe it.”

you’ve got the option to listen to the rest of Isaacs' interview on theAwards Chatterpodcast above.

Jason Isaacs visits SiriusXM Studios on April 09, 2025 in New York City., Jason Isaacs in Harry Potter and the Order of the Phoenix

Jason Isaacs in 2025 and in ‘Harry Potter and the Order of the Phoenix’.Gary Gershoff/Getty; Murray Close/Warner Bros