Key of Knowledge - Nora Roberts

Key of Knowledge is the second book in Roberts' Daughters of Glass trilogy. You have to read Key of Light first to really appreciate this novel. This story follows Dana in her search for the key of knowledge that's needed to unlock the souls of the three trapped demi-goddesses. Look forward to more magic, adventure, and romance. I've already started reading Key of Valor, the final book in the trilogy. Highly recommended.