According to TMZ this is the case and Spencer Pratt has it and is willing to sell it.
If Spencer sells it Karissa told TMZ she will sue. That's shocking.
We're told not too long ago Spencer was at the Malibu house he once shared with Heidi ... moving out some of his stuff. Sources tell us Spencer came upon a camera with XXX video of Heidi and Karissa -- and the light bulb went off.
Sources say it was then that Spencer decided he could make a fortune selling his "library" to Vivid Entertainment -- much of it featuring naked, fornicating Speidi.
Spencer has to say something to stay relevant -- now he's taking the whole "I have a sex tape avenue." It's been longer than Lindsay Lohan since he last worked.
Karissa and twin sister Kristina were Miss July/August 2009[TMZ]