Gravity Falls-A Mystery Unravles

Living off the woods in the small town of Gravity Falls, Oregon; lives a girl named Avill. Avill meets two twins Dipper and Mabel, and the rest of the Pines family. While trusts bond her together with the Pines, she hides a secret. Is she really who they think she is, or could this secret hold the key to a world-endin...