About the film
Behind the Mask: The Unauthorized DVD is a 2002 documentary film about the American heavy metal band Slipknot. The single‑sided disc covers the band's formation, early development, and relationship with its fanbase but lacks subtitles and closed captions. Due to licensing restrictions, it includes no Slipknot music or performance footage.
From the film's Wikipedia article (CC BY-SA 4.0).