The powerful final novel in the Star Trek: Crucible trilogy, this emotional Star Trek: The Original Series adventure follows Captain Kirk from the heartbreak of “The City on the Edge of Forever” to a last battle across time itself. 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, thereby preserving Earth's history. Returning to the present, he continues a storied career as a starship captain, opening up the galaxy. But as he wanders among the stars, the incandescence that once filled his heart remains elusive. IN A SINGLE MOMENT ...that haunts James T. Kirk throughout his life, he preserved the timeline at the cost of his happiness. Now, facing his own death, the very fabric of existence collapses across years and light-years, forcing him to race against—and through—time itself, until he comes full circle to that one bright star by which his life has always steered.