The Pawn Series Book Four: The Solar Sea - The Pawn, #4

In a dystopian world, Earth, Moon, Mars and Asteroid-belt population fights against a new enemy, the Venatores. The enemy is the descendants of the DNA altered humans, the runaway Super soldiers that the Companies had produced inside their military Labs. Some of them look like humans, but most of them were like monsters to normal humans.
The long war between Zeven Sterren and its rival company ECT/TMM Group has ended in both companies collapse. The military Unit M45 has separated from its parent company Zeven Sterren and is now on its own. Captain Eriksen has hired the Pawn, Pei Pei to the M45 after he had saved a little girl from Moon Lab. She is a Queen Pei Pei have been searching for.
Pei Pei, Code P31x2, is now traveling toward Mars on Carrier C0126 with the M45 and her Queen Mary. Their new home Base is located in Arcadia Planitia, far from the inhabited areas of the planet. Things between her and the rest of the crew are still edgy, no one is at ease with her. She is a former enemy and Super soldier, one of those they had fought against in the war. An outsider group causes trouble in space, and the crew learns who to trust and how dangerous she is...