After spending spring break in Mexico with her grandparents, Carly Aragon can't wait to get back to school at Spencer Academy in San Francisco. With Lissa Mansfield and Gillian Chang by her side, she's ready for anything . . . except a new roommate. Lady Lindsay MacPhail, flamboyant daughter of the Earl of Strathcairn, quickly becomes Carly's worst nightmare. "Mac" not only swoops in and steals Carly's privacy, she's also dating Brett Loyola--Carly's biggest crush But when Mac starts receiving strange, threatening e-mails, she and Carly must come together to figure out who's behind them and why. In the end, the fate of one girl will lie in the other's hands. Will the two learn to trust one another and trust God?