Legend Undone — Angie Day

Readers are calling it "creative" and "engaging!" 

Mara wasn't just a Legend who survived on human energy, she used to be a dangerous Shadow who wielded more power than she wanted. When she discovered that Alec, the leader of the Shadows and her childhood love, held a dark secret about her past to keep her prisoner until he could use her against the humans, she ran.

As the first Legend to escape the Shadows alive, Mara must keep moving, hiding among the humans that every Legend learned to hate, while she searches to understand her past. Under the alias Kate, she meets Kylan and his way of life challenges everything she used to know. As she falls for Kylan, she finds clues about what happened before she became a Shadow.

But the closer she gets to an answer, the faster Alec can destroy everything she has grown to love.