The Yuletide child

Tegan 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?