The Ruby Red Trilogy -Kerstin Gier Used, Like New‎ (3786)

Sixteen-year-old Gwyneth discovers her family's time-travel gene when she mysteriously lands in the last century. A bestseller in Germany, the first in the beloved YA trilogy. Gwen's life has been a rollercoaster since she discovered she was the Ruby, the final member of the secret time-traveling Circle of Twelve. Between searching through history for the other time-travelers and asking for a bit of their blood (gross!), she's been trying to figure out what all the mysteries and prophecies surrounding the Circle really mean. Gwen has a destiny to fulfill, but no one will tell her what it is. And she's just learned that her charming time-traveling partner, Gideon, has probably been using her all along. This stunning conclusion to the trilogy reaches new heights of intrigue and romance as Gwen finally uncovers the secrets of the time-traveling society and learns her fate.