RegIO (Book II Of The IO series)

Sapphire West and her friends, after the life changing experience of the Venatio, are just beginning to heal themselves from the death of their friend whilst trying to understand all they had seen during their journey. And then like the world wants them to undergo even harder situations, they are captured and taken to be experiment on, they are launched head first into the answers they wanted.
However, the secrets unveiled shake the foundation of their beliefs and they begin to question whether the place they call home, is built upon lies and how far the royalty has gone to hide their secrets.