Opal by Jennifer L. Armentrout (Book 3)

DAEMON BLACK IS OUT OF THIS WORLD

Daemon wasn't fooling around when he set out to prove his feelings for Katy. And now that they’ve made it through the rough patches... there's a lot of spontaneous combustion going on.

BUT HE CAN'T PROTECT EVERYONE.

After everything, Katy is no longer the same. Each new step takes her closer to discovering the truth and puts everyone she loves in the path of the secret organization responsible for torturing and testing alien hybrids.

TOGETHER THEY ARE STRONGER . . . AND THEY KNOW IT.

Yet when help comes from the most unlikely source, and friends will become the deadliest of enemies, they can't turn back. Even if the outcome will shatter their galaxy forever.