Precipice - The Backworlds, #6

In the far future, humanity settles the stars, bioengineering its descendants to survive in a harsh universe. This is the sixth book in the science fiction series, The Backworlds. A space opera adventure. The Backworlds hang by a Quantum string, a thread about to snap. Annihilation is coming if Craze can't stop it. The genocidal alien he had trapped breaks free, destroying a ship belonging to the Backworlds' oldest enemy, the Fo'wo's.
The murderous alien wants to overtake the galaxy. The Fo'wo's want another war. The Backworlds' best chance to survive is to overcome a century of hate and forge an alliance with the Fo'wo's. Because of his history with the alien, Craze is recruited to represent his people. Now he's the most hated man in the galaxy. The looming war will be a holocaust unless Craze can stop it, knowing salvation comes at a price.