High stakes chess competition has always been a man's game-until Grace Ann Frasier topples some of the game's greatest champions and turns the chess world on its ear. Her prowess at the game is matched only by her rivals' desire to defeat her, or, worse, avenge their losses. When an international championship threatens Grace's safety, a bevy of security experts are hired to look after her, but only one is her personal, close-duty bodyguard, courtesy of Ironclad Solutions, Inc. Sam Knight knows nothing about chess, but he knows Grace is working to achieve something important, and he vows to shelter her from those who mean her harm. When she leans on him for emotional support, attraction battles with professionalism and Sam finds his self-discipline wavering. Soon the complexity of their relationship resembles a chess board, where one questionable move can ruin everything-or win a game that could resonate around the world.