Demigods Academy - Book 8: Hours Of Olympus

After accidentally triggering a time portal they didn't even know existed, Tinker, Nicole, and Cade find themselves lost in time. Among strangely familiar faces and events no one should ever relive, they are urged to work together to find a way to get home. But time is not the only thing triggered, and when Nicole begins to slowly get her memories back, new challenges arise, proving that she is more powerful than she remembers. As new revelations make her doubt everything she believes, she'll need to understand what the Corpse King wants before it is too late...