A new video from the set of HBO‘s highly anticipated Harry Potter series has surfaced online, teasing a familiar location. What does the new Harry Potter set video show? Shared on X, the new behind-the-scenes video offers fans a glimpse of the iconic Hogwarts Express train that the upcoming Harry Potter show will frequently use throughout its ten-season run. New video showing the Hogwarts Express from the HARRY POTTER TV series in detail ? Executive producers are Mylod, Rowling, Neil Blair, Ruth Kenley-Letts, and long-time Harry Potter franchise producer David Heyman.