Harry Potter 20th Anniversary: Return to Hogwarts celebrated 20 years since the Wizarding World's first film.
Offering interviews with the magical trinity, we also heard stories from the gigantic alumni of actors. One of which involves a story where one cast member accidentally injured another on set.
Read More: Hogwarts Legacy: Everything You Need To Know
Harry Potter Actor Bruised Co-Star On Set
The incident occurred between Jason Isaacs and Tom Felton, both of whom portray father and son, Lucius Malfoy and Draco Malfoy respectively.
During the filming of Harry Potter and the Chamber of Secrets, there's a scene where Harry Potter is hiding in a case inside the Borgin & Burkes. The cross-headed wizard witnesses Lucius smack Draco's hand using his cane, but this left an actual, accidental mark on Felton's hand.
The segment is a deleted scene but Jason Isaacs does shed more light on the moment:
The first scene that I shot was actually cut, it's on the deleted scenes. Draco touched something, and I used this cane and went, 'Don't touch anything, Draco.' But I didn't know how sharp the teeth were, they went right into little Tom's hands.
It sounds like it really hurt Tom Felton, but the young star was strong enough to carry on filming:
He looked up at me, and his eyes welled with tears, and I went, 'Tom, I'm so sorry, I didn't realize how sharp they were and how heavy it was,' and he went 'It's all right, it's good for the scene.'
Tom Felton commended how Isaacs immediately apologised after the shot ended.
He'd be this evil father, and when we'd say cut, he'd come and give you a cuddle and say, 'Oh did I hit you too hard?' Real Jekyll and Hyde, that one.
The Special episode is available on HBO Max (US) and NOW (UK). We also learned that one of the actors making up the Golden Trio was about to leave the franchise.