Harry Potter quiz shows for fans to mark movie's 20th anniversary

LOS ANGELES - Know your Gryffindors from your Dementors? Who was the Half-Blood Prince and what can you buy at Ollivanders?

Fans of "Harry Potter" can test their knowledge of the books and films in a new TV quiz competition series being launched by WarnerMedia to air later this year as part of 20th-anniversary celebrations of the first film in the adventures of the boy wizard. WarnerMedia said on Wednesday that casting was open for fans who want to take part in the four, one-hour quiz challenges.