01/21/2011 12:48 pm ET | Updated May 25, 2011

'The Social Network' And '21' Author Ben Mezrich's Next Unwritten Book Already Optioned For Film

Ben Mezrich, the writer on whose nonfiction book the movie is based, is teaming up with "Network" producers for a new film called "Sex on the Moon."

The project is based on a book proposal by Mezrich, who wrote "The Accidental Billionaires," on which Aaron Sorkin based his script for "The Social Network" and who previously penned the book that became the Kevin Spacey hit film "21."

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