Secrets are revealed and a Sister Warrior mysteriously returns to the fold as Ava and her allies attempt to keep a sacred object out of the wrong hands.

“The weapons we fight with are not the weapons of the world. On the contrary, they have divine power to demolish strongholds. ” Infiltrating the Vatican to find a tomb…

“Do not be afraid of what you are about to suffer. I tell you, the devil will put some of you in prison to test you, and you will suffer…

Ava takes her first steps toward understanding the halo’s power, but a baptism by fire at the hands of the Order leaves her feeling burned.

Clarke struggles to survive on a desolate, scorched earth while her friends in space come across a long-awaited beacon of hope.