The Yuletide childTegan Fielding is supposed to be masquerading as her twin, not sleeping with her sister's boss! But James Maverick is too sexy to resist. She'll be his mistress--yet he doesn't know who she really is. The deception must end; Tegan is falling for the tycoon, and as Christmas approaches she has some news. How will James react when he finds his convenient mistress is expecting a special, seasonal delivery?