Acolyte's Underworld: An Epic Fantasy Saga (Empire of Resonance, Book 4) (Unabridged‪)‬

Every power has its price. 

When Ella and Tai earned the power of a god, she thought they were finally safe - until another god sends assassins to take it back. To stop him she must go empty-handed and undercover in the god's own city - the same city she fled years ago. To succeed, she'll have to defeat the ghosts waiting there first. 

Some prices cannot be paid in coin.

Duped into killing an innocent man, Marea Fetterwel returns to the same city to make it right and take control of her life - only to find she cannot fix her mistakes; her family no longer wants her, and even her friends are abandoning her. A stranger there offers her the power to change all that - for a price. 

The thrilling conclusion to the Empire of Resonance saga is here. You'll never expect what's coming.