Shadowstrike (Shadows Book Three) - Shadows, #3

The last human in a forest of monsters, relentlessly hunted and running out of options. One of the infected, the bloodlust inside threatening to destroy the last of his humanity. A commander with no crew, forced to watch as horror is unleashed on her home. A beast created as a perfect weapon, questioning orders even though disobedience means death. The company made them what they are, but only their decisions will determine who they become.
The dark ending to the Shadows trilogy, Shadowstrike combines horror and science-fiction to question what - or who - monsters really are.