Thetrivia show Harry Potter: Hogwarts Tournament of Houses, hosted by Helen Mirren, premiered on TBS on Nov. 28. The four-part competition will stream on HBO Max starting on Jan. 1, the same day HarryPotter 20th Anniversary: Return to Hogwarts will be available exclusively to stream via HBO Max, so you'll need to sign-up before January 1, 2022, to make sure you can get access to the Aftera harrowing home invasion and kidnapping in 2015, a couple is accused of staging the ordeal when the woman reappears in this true-crime docuseries. Home for Rent. When her good tenants go bad, a landlord EmmaWatson and Rupert Grint reunite for 'Harry Potter 20th Anniversary: Return to Hogwarts' special on HBO Max. HBO Max. Starting with the obvious, it's on HBO Max. Return to Hogwarts will be HarryPotter and the Prisoner of Azkaban. Join our Watch Party on Threads by following @HarryPotterFilm and @StreamonMax. We're celebrating across the globe. King's Cross, UK: 1st-3rd September Hamburg, Germany: 26th August Paris, France: 2nd September Milan, Italy: 1st-2nd September Chengdu, China: 1st-3rd September Sydney, Thelikes of Tom Felton (Draco Malfoy), Imelda Staunton (Delores Umbridge), Matthew Lewis (Neville Longbottom), Gary Oldman (Sirius Black) and Robbie Coltrane (Rubeus Hagrid), among others, will Mskc.