WATCH: Vintage Hard Copy Segment Unearths Dragon Tattoo Mystery

The Girl With the Dragon Tattoo Tumblr Mouth Taped Shut recently unearthed a startling artifact: A vintage segment of the investigative news program Hard Copy exploring the case of one Harriet Vanger, a teenager who went missing decades ago from her family estate in Hedeby Island, Sweden. Watch the unsettling VHS-era report after the jump, complete with your favorite commercials from '80s primetime television.

If you're not familiar with the story within Stieg Larsson's The Girl with the Dragon Tattoo novel (or Niels Arden Oplev's 2009 Swedish adaptation), the Vanger case is the mystery that brings journalist Mikael Blomkvist (to be played by Daniel Craig in David Fincher's upcoming version) and punk hacker Lisbeth Salander (as embodied by Rooney Mara) together as an unlikely sleuthing team.

This has got to be the best piece of movie viral marketing to come along in a while. Kudos, Dragon Tattoo team! And keep these unconventional promo bits coming.

[Mouth Taped Shut via The Playlist]