Cerulean Strength - Mandy Rosko - Bog

Celeste is a Taurus Blue, an accidental Zodiac who has devoted herself to helping the Zodiac Enforcement Agency keep peace on Earth. She enjoys her desk job at the ZEA prison, but she never expected a prison break to lead her to a tropical paradise, and straight to an old childhood friend. Though she's only ever felt friendship for him, Dagon wants more and now that he's a multi-billionaire, he'll stop at nothing to capture Celeste. Even if that means luring her to his island and then cloaking it to cut her off from the rest of the world, as though it and the people on it never existed. Now Celeste must thwart Dagon and save all the island residents and tourists before it's too late.