Sloane Crosley — the author of personal essay collections I Was Told There’d Be Cake and How Did You Get This Number — has sold her first novel, to Farrar, Straus, and Giroux. The Clasp will follow a group of late-twentysomethings who attempt to rescue their friend from an obsession and wind up on a treasure hunt for the jewelry that inspired Guy De Maupassant’s “The Necklace.†It’s out in 2015.