Caliban's War

On Ganymede, a monstrous super-soldier massacres a Martian squad. On Earth, an influential politician tries to prevent another interplanetary war. Venus has been taken over by an alien proto-molecule and is threatening to spread throughout the solar system. James Holden and the crew of his ship Rocinante keep the peace in the service of the Outer Planets Alliance. They are searching for a child who disappeared on war-torn Ganymede. Little do they know that the future of humanity depends on a single ship being able to prevent an alien invasion that may have already begun.