Sebastian Case relies on his irreplaceable assistant for everything. But since arriving in Vegas for a conference, mousy Missy Ward has transformed herself. From ordinary to ravishing. From modest and reserved to bold and sensual. And Sebastian, who'd barely noticed she was a woman, finds himself dazzled by her allure.

Now she's quitting and Sebastian will do anything to keep her. Including accepting her outrageous bet. One spin of the roulette wheel; black and she'll stay; red and Sebastian owes her one night of passion. What can he lose, except maybe his heart?