Watch the "Return to Hogwarts" trailer

The trailer for HBO Max’s Harry Potter 20th Anniversary: Return to Hogwarts dropped yesterday.

The special commemorating two decades of the movies will feature the three stars — Daniel Radcliffe (Harry), Emma Watson (Hermione), and Rupert Grint (Ron) — along with over a dozen supporting-cast members.

You can watch the official trailer below or on YouTube, where you'll find a detailed list of cast members.

Harry Potter 20th Anniversary: Return to Hogwarts premieres January 1.

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