Enslaved (Eternal Guardians #5)

After being rescued from the Underworld, Gryphon is plauged by strange voices and an evil foreboding. He believes that his only hope for salvation is to track down the goddess who cursed him...until he meets Maelea.
A prisoner with no bars, Maelea encounters Gryphon on her quest to find Olympus. He's about to test her loyalty to the gods, and she's ready to find out if he still has a heart worth saving...