A four-minute teaser has hit the Web for When Harry Left Hogwarts, Morgan Matthews’ behind-the-scenes documentary of the making of both parts of Harry Potter and the Deathly Hallows. Watch it below. You truly get a feel for how secretive the production was, as evidenced by Daniel Radcliffe, Rupert Grint, and Emma Watson having to mask their faces like kidnap victims as they were driven to shoot Part 2‘s epilogue (pictured). You also see how much angst the trio felt as filming came to an end and the genuine concern the franchise’s older actors had for them (Emma Thompson recommends therapy), as well as what it was like to be a bit player invited into this magical world. The 48-minute documentary will be available on the Blu-ray combo pack out Nov. 11.