IN A SINGLE MOMENT . . . the lives of three men will be forever changed. In that split second, defined paradoxically by both salvation and loss, they will destroy the world and then restore it. Much had come before, and much would come after, but nothing would color their lives more than that one, isolated instant on the edge of forever. IN A SINGLE MOMENT . . . James T. Kirk, displaced in time, allows the love of his life to die in a traffic accident,...