The Last de Burgh (Harlequin Historical) (The de Burghs)

is book #350 in the Harlequin Historical line that is sold exclusively online from Harlequin rather in stores.
==Book Description==
Destined for the convent, Emery Montbard disguises herself as a boy and enlists the help of chivalrous knight Nicholas de Burgh.
From a proud, dynastic family, Nicholas has a strong code of honor—which is challenged when he notices the provocative curves of his mysterious companion. Doesn't she realize that she gives away her true identity every time she moves? But Nicholas also hides a secret—one that lies at the very heart of him and can never be revealed….
(Description from harlequin.com)