A forbidden ritual. A dangerous soul bond. A romance that could reshape two realms.

Desperate to save her brother, Mia Petrakis performs a forbidden ritual and accidentally binds her soul to Hades, King of the Underworld.

Now caught in a bargain neither can escape, Mia is drawn into a world of ancient laws, divine power, and growing danger. As their bond deepens, she must decide how much she is willing to sacrifice for the people she loves-and what it means to fall for a god.

Underworld Vows is the first book in a Greek mythology-inspired fantasy romance series featuring a slow-burn mortal/god romance, accidental soul bond, forced proximity, found family, and high-stakes supernatural conflict.