Frontier

Marshall Hunter only wanted to fly: the faster, the higher, the better. But a life of rescuing wayward spacefarers and derelict satellites in the cislunar cruiser U.S.S. Borman is far from the adventure he'd imagined. But his fortunes change when a billionaire couple goes missing on their way to a near-Earth asteroid. Out of contact and on a course that will eventually send them crashing into Mars, the nuclear-powered Borman is dispatched on an audacious, high-speed interplanetary run to bring the couple home. As they approach the asteroid, however, the Borman itself becomes hopelessly disabled.