A Prince of Song and Shade — Lisa Cassidy

...The darker the night...

Emboldened by the effect Talyn Dynan had on the humans of Mithranar, the Shadowhawk is working harder than ever to make a difference for those struggling to survive on the streets of Dock City. But when violence spreads to the citadel in a horrific murder, he finds himself torn between protecting the humans and keeping his identity secret from the increasingly determined prince of night and his Falcon hunters.

Meanwhile, Talyn has returned home to the Twin Thrones ready to begin rebuilding her life. Yet there are more secrets shrouding the Dumnorix family's past than she realised, and when the Callanan ask her to undertake a highly dangerous mission, Talyn is faced with a difficult choice--between duty to her family and country and trusting the shadowy criminal she met in Mithranar.

And after their failed assassination attempt on Prince Cuinn, Vengeance are far from done. Their reach is deeper than either Talyn or the Shadowhawk could ever have imagined, and now they've got a new target in their sights...