Twin Souls. One Sacrifice. Northwestern University senior Zoe Adams has spent her fifth incarnation on the run. Abused and abandoned by those she once trusted, Zoe turns her back on a duty her soul accepted lifetimes ago to focus on a music career in this one. Until her Gemini's untimely arrival forces Zoe to choose between a love she can't remember and a life she's always dreamed of. Cade Adams has waited twenty-one years to reclaim his beloved soul mate, but his elation is short lived. As Zoe struggles to let go of her human life, demons from Cade and Zoe's past threaten the Gemini, and they find themselves living on borrowed time. The Tree of Souls is empty, and only an Eternal Sacrifice can refill it. Is forgotten love worth dying for, or is five incarnations more than one soul can take? With more than just the fate of their reunion at stake, love becomes an Eternal Sacrifice Zoe and Cade may not escape.