When an ice-hauling ship is destroyed by a stealthy attacker when answering a distress call, the surviving XO broadcasts an accusation that sets off a war between Earth and Mars. But when the attack appears to be vaguely correlated with the case of a missing trade empire heiress, larger plans are revealed.
Notable for being a harder sci-fi series than most.
The "Epstein" drive is a type of fusion drive that achieves unrealistically high specific impulse, classing it above even previous torch drives. Allows ships to spend a significant time under thrust, and thus gravity. Most maneuvers are burn-coast-flip-burn.