At his death in 1988, Robert A. Heinlein left a legacy of novels and short stories that almost single-handedly defined modern science fiction. But one of Heinlein's masterpieces was never finished. In 1955, he began work on Variable Star, a powerful and passionate tale of two young lovers driven apart by pride, power, and the vastness of interstellar time and space. Then he set it aside to focus on other novellas.The detailed outline and notes he created for this project lay forgotten for decades, only to be rediscovered almost a half century later. Now the Heinlein estate has authorized award-winning author Spider Robinson to expand that outline into a full-length novel. The result is vintage Heinlein, faithful in style and spirit to the Grand Master's original vision.