Steve Ross, head of Crown Publishing, told The New York Times the book would be Plame's "first airing of her actual role in the American intelligence community, as well as the prominence of her role in the lead-up to the war."
Ross would not discuss the size of Plame's advance with the newspaper, which cited sources close to the bidding process in its report.
Plame, wife of former Ambassador Joseph Wilson, was unmasked as a CIA agent by conservative columnist Robert Novak. Her identity was allegedly leaked to several reporters by members of the Bush administration.
Ross described Plame as "this mysterious woman at the very eye of a major storm and the concentric circles keep widening."
Crown, an imprint of Random House, plans to bring the book out in September 2007.