Regna Born - The Regna Sagas, #1

Beneath the veneer of everyday life, a clandestine world thrives in the shadows, filled with powerful telepaths who call themselves adepts. These superbeings have guarded their secrets for millennia, but when a brilliant scientist, Joe Martin, maps and prepares to publish their genome in a famous medical journal, the adepts realize they can't hide forever and further exposure to the human world threatens their existence. Gabriel Kelly has his life turned upside down when someone murders Joe, his ex, and the race to find the genetic map begins.
Gabriel, an average adept, enlists the help of his best friend Sellers, who has his own secrets, in exposing the killer and securing the map. Gabriel finds himself caught between the human cops who think he killed Joe and don't know about the map, and rival adepts who don't care who killed Joe but want the map for their own ends. Will Gabriel be the key to preserving the secrecy of adept society, or will the revelation of their existence alter the course of history forever?