Jason Isaacs marked Tom Felton’s 39th birthday on Sept. 22 with an Instagram post asking that night’s Broadway audience to sing “Happy Birthday” at curtain call. Felton, playing Draco Malfoy in Harry Potter and the Cursed Child, thanked him in a comment.
The actors portrayed Lucius and Draco Malfoy, a father and son, in the Harry Potter films. Felton has said he still calls Isaacs “Dad” and that they remain close.
Felton made his Broadway debut as Draco on Nov. 11, 2025, returning to the role for the first time since filming wrapped on the final Harry Potter movie in 2011. He is scheduled to play the part in New York through Jan. 3, 2027.
