Elemental Pleasure - Trinity Masters: Fall of the Grand Master, #1

A dangerous Marine. A tech genius. A brilliant scientist. When Carly Kenan joined the secretive Trinity Masters in college, she received entrée to an exclusive club that gave her access to wealth and power. But there's a price all members must pay-they accept an arranged marriage, between not two, but three people. Summoned to the society's headquarters, Carly meets her trinity-the darkly commanding ex-Marine, Lance, and Preston, the serious chemist who is unexpectedly possessive and sexy.
Though their physical attraction is instantaneous and incendiary, Carly struggles with the emotional intensity of their relationship. When Lance uncovers a dangerous crime at Preston's company, Carly is caught in the crossfire and the struggling lovers are forced to move beyond desire to trust. For the Trinity Masters, there is passion and power in three.