Dr. MacKenzie Lloyd is bulletproofing herself for marriage. Determined that no husband of hers will ever leave, she's learned everything there is to know about the art of pleasing a man. But now that it's time to put her knowledge into practice, she's stuck. Until she finds herself alone with seriously sexy Lucas Wainwright and decides to see if practice can make perfect....CEO Lucas Wainwright thought he could handle just about anything...until he's propositioned by a very determined--and incredibly sexy--Mac. The gorgeous redhead is as knowledgeable as a madam, as irresistible as an innocent. Lucas had no idea how incredible sex could be, until Mac becomes his every fantasy in the flesh. But once Mac has proved all her theories, will she start looking for another test subject?