Synchronicity (Book One of the Geminae Duology)

What if you woke up in someone else's life?
Hazel Stone is just an ordinary teenager--or so she thinks. But lately, she's begun mind-hopping into a stranger's dark reality, and she's starting to question everything, including her own sanity. Then she meets Max McCormick, the brilliant new kid in town with an impressive list of phobias. A bizarre series of coincidences brings the two of them together, and their lives take a sharp turn from the mundane to the metaphysical. It's up to them to u...