Speaking to PEOPLE ahead of the opening of Chicago's new Harry Potter Shop ... wizarding guardian to his own young Draco Malfoy. "I still call him 'Dad'," the 37-year-old admitted.

And for Tom Felton, who played his on-screen son Draco Malfoy, Isaacs will always be "Dad." While speaking to People ahead of the opening of the new Harry Potter Shop in Chicago, Felton ...

Speaking to PEOPLE ahead of the opening of Chicago's new Harry Potter Shop, Felton said he's still very close with his former ...