Avow: The Archers of Avalon, Book 3 (Unabridged‪)‬

Scarlet remembers. Everything. Her past lives, Tristan, Gabriel, Nate; she remembers it all - including how to get to the Fountain of Youth. But time is running out. Heather and Gabriel have been kidnapped by Raven, while the curse that has plagued Scarlet and Tristan for centuries has shifted, putting the star-crossed lovers in more danger than ever before. Water from the Fountain of Youth is the only thing that can save Scarlet and her loved ones. But the water comes at a price. With lives - and hearts - at stake, Scarlet leads her friends on a dangerous journey to the Fountain of Youth, where eternal life is possible, but death is certain.