Dr. Garrett Gibson, the only female physician in England, is as daring and independent as any man. Yet she has never been tempted to embark on an affair, until now. Ethan Ransom, a former detective for Scotland Yard, is as gallant as he is secretive, a rumoured assassin whose true loyalties are a mystery. For one exhilarating night, they give in to their potent attraction before becoming strangers again. Despite their vow to resist each other after that sublime night, she is soon drawn into his most dangerous assignment yet. When the mission goes wrong, it will take all of Garrett's skill and courage to save him.