Former army-turned-ER doctor Grace McKinnon is through with going to bed with nothing more than fantasies and a yearning to resurrect her personal life. She's determined instead to take the Cougar Challenge with a flesh and hot-blooded younger man. She discovers the perfect opportunity steaming up the curtain of exam room four.Captain Mark Bennington has been locked and loaded -- ready for action -- since meeting Grace. He's on a mission to heat up the Boston nights while on leave. This sexy older woman is lighting his way, fulfilling double-time every sex wish he's ever made. But it's going to be the toughest fight of his life to convince her to take a chance on more than just a fling.