The Things Gods Break by Abigail Owen

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The gods want her dead…Hades will bury them. You’d think I’d have learned by now:
Don’t mouth off to deities.
Don’t fall for the King of the Underworld.
And definitely don’t get dragged into a divine death match where I’m the cursed mortal prize. But here I am–trapped in Tartarus, humanity’s worst pit stop, squaring off against monsters who make the gods look merciful. Titans, twisted by centuries of rage and ruin, are sealed behind seven ancient locks. And guess what? I’m the key. To escape, I’ll have to survive every horrifying trial they throw at me. To win, I might have to become something the gods never saw coming. Oh, and Hades? He’s about to break every rule the gods ever wrote. Because to save me…the god of death will burn the world. But if I break free? So do the Titans. And the world won’t just suffer–it’ll beg for the end. The Crucible series is best enjoyed in order.