Hidden City by Jaron Osiar

In this final volume of the Vastus tetralogy, the telepaths have discovered stolen dragons on Vastus and are determined to capture and return them to Mendje. Humans and shapeshifters fear the telepaths will use the dragons to destroy their suffering civilizations. After generations of fighting, food is scarce in space. Remnants of the battle fleets are gathering around Vastus, desperate for its abundant resources. Those watching over the planet are suspected of treason and could be captured at any moment.

Elaina and Davu have been imprisoned in a strange and unfamiliar place that is nothing like they have ever encountered before. They discover secrets that have been hidden for generations as they fight to defend their home against ruthless invaders and assassins. The stakes are high as each species looks to this young warrior and her dragon to vanquish their enemies and bring closure to endless war.