NEW YORK (AP) -- One publisher is not enough for the prolific, million-selling romance writer Sylvia Day.
For the fourth time in the past year, the author best known for her "Crossfire" series has completed a major book deal. On Thursday, St. Martin's Press announced a two-book, eight-figure agreement with Day for a new "Blacklist" series.
Last March, she signed a two-book, seven-figure agreement with Harlequin. In June, she and Penguin agreed on an eight-figure deal for two more "Crossfire" books. In July, HarperCollins imprint William Morrow signed her up for a paranormal novella.
Day is widely believed to have benefited from the popularity of E L James' "Fifty Shades of Grey." In a 2012 interview with The Associated Press, Day said she also had been helped by "Twilight" fans seeking more explicit fiction.
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