Harry Potter 20th Anniversary: Return to Hogwarts

Cast members from all "Harry Potter" films reunite in a retrospective special to celebrate the anniversary of the first film, including interviews and cast conversations.

Cast:Emma Watson , Daniel Radcliffe , Gary Oldman , Tom Felton , Ralph Fiennes , Jason Isaacs , Helena Bonham Carter , John Hurt , Bonnie Wright , Rupert Grint , Stephen Fry , Toby Jones , Alfred Enoch , Evanna Lynch , Matthew Lewis , Alfonso Cuarón , Robbie Coltrane , Imelda Staunton