When Damon Corso is blackmailed it's not just his career that's in jeopardy, but the existence of the Trinity Masters–America's oldest and most powerful secret society. He and fellow member Marco Polin, a world famous playboy musician, enjoy sharing women, a secret that until now they've kept quiet. Tasha Kasharin, the spy sent to help them, knows this is more than simple blackmail. Marco and Damon's lives are in danger. She ignores her increasingly vivid fantasies about being part of a trinity with them until their investigation is interrupted by the Grand Master, who calls them to the altar and binds them in a ménage marriage. The men must trust their futures to the unexpectedly innocent woman who's now their wife, while dealing with the change in their own relationship, and the complicated feelings that come with it. Blackmail escalates to violence, and they'll have to trust and accept one another if they're going to survive.