“It was probably during the sixth film, when I was 18 or 19, that I had an appreciation for, A, how lucky I was and, B, for what I was doing. I thoroughly enjoyed every minute of the process.

“So I think after that is when I really started focusing on how I was going to be able to continue doing this.

“A project like Full Circle is really the complete opposite of Harry Potter, and, hopefully, it will further my options and keep other doors opening for me,” he said.

“I read the first episode before understanding fully the entire concept,” Felton said from a Los Angeles hotel. “I was massively excited when they explained it to me because it does take some explaining. It’s a unique concept and a unique scenario.

“Of course I couldn’t resist reading all 10 episodes to understand how lives can interlink without you even being conscious of it. I’d never read anything even remotely close to this.

“This was just two characters talking intensely at their table, without any real stage direction, and just relying on the performance,” Felton said. “That was a huge appeal to me, and that’s also what kind of terrified me, to be honest.”

Felton, used to filming perhaps 20 to 30 seconds of [Harry Potter] footage through an entire day, shot his scene for “Tim & Bridgette (played by Minka Kelly)” — all 25 minutes’ worth — in a single day.

“The whole season has a tone and a feel to it,” he said, “but the 10th episode just turns everything on its head.

“It’s a high-energy, very, very intense ending.”