'We're Allowed To Make S--t Up.' The First Scene Jason Isaacs Shot With Daniel Radcliffe For Harry Potter And The Chamber Of Secrets Was Notable For One Big Reason

Jason Isaacs and Daniel Radcliffe side by side from Harry Potter 2
(Image credit: Warner Bros.)

There are popular franchises, and then there's the global sensation that is Harry Potter. The Wizarding World has entertained audiences for decades thanks to the Harry Potter movies (which are streaming with a Max subscription), as well as theme parks, stage plays, video games, and the original novels. Jason Isaacs famously played Lucius Malfoy, and told the story about why filming his first scene with Daniel Radcliffe was so unexpectedly special.

The bonds formed by the Harry Potter cast are still going strong today, as we saw during the Return to Hogwarts reunion. But new information is still trickling out about their time filming the series. Case in point: when Isaacs appeared on the podcast Dinner's On Me, he shared what surprised him the most when filming The Chamber of Secrets. Namely, the cast's ability to improv. As he put it:

The thing that was very surprising is how much leeway we had to improvise and change things.

He cited the fact that author J.K. Rowling wasn't on set, therefore allowing the actors more freedom than if she wanted each scene to be accurate for the book to screen adaptation. While speaking to host Jesse Tyler Ferguson, he explained why he started to ad-lib while filming with a young Daniel Radcliffe. In his words:

Harry Potter's there, [and Lucius] is a very proud, arrogant man. Surely, he'd say something trying to get status back in, and so we'll try something. And I made up a line, and Daniel made up a line back. And I thought, 'We're allowed to make shit up in Harry Potter.'

Given the beloved nature of the Harry Potter franchise to that point, who can blame Isaacs for having this reaction? Although now I have to wonder exactly what he was improvising as Draco's villainous father while on set. Did any of these lines make it into the theatrical cut? I need more information!

Max: Plans start from $9.99 a month

Max: Plans start from $9.99 a month
The Harry Potter franchise is streaming over on Max. Pay $9.99 a month for its With Ads plan, and with three tiers available following a Max subscription. You can also prepay for a year and save up to 20%.

While Jason Isaacs developed a strong relationship to his onscreen son Tom Felton throughout filming the Harry Potter movies, the same can also be said for Radcliffe. Later in the same conversation, he spoke about recognizing the talent and intellect in the latter actor, offering:

I always knew he was smart. I thought he would, and I still think, he'll end up being a director as well as an actor. He was always so grounded and so mature and humble, and he's continued to be ambitious, really ambitious, and take risks as well. He's like, I've been famous. I've been rich. I've done all those things. So now I can do interesting independent films.

We'll have to wait and see if/when Daniel Radcliffe takes the jump from acting to directing. He's had an impressively eclectic career over the years, spanning both the stage and screen. So why not get behind the camera?

The Harry Potter franchise is streaming in its entirety on Max, which will also be home of the developing Potter TV show. We'll just have to wait and see when the Wizarding World returns to our screens.

Corey Chichizola
Movies Editor

Corey was born and raised in New Jersey. Graduated with degrees theater and literature from Ramapo College of New Jersey. After working in administrative theater for a year in New York, he started as the Weekend Editor at CinemaBlend. He's since been able to work himself up to reviews, phoners, and press junkets-- and is now able to appear on camera with some of his favorite actors... just not as he would have predicted as a kid. He's particularly proud of covering horror franchises like Scream and Halloween, as well as movie musicals like West Side Story. Favorite interviews include Steven Spielberg, Spike Lee, Jamie Lee Curtis, and more. 

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