Book 1 in a 3 Book series... Dipper and Mabel Pines are back in Gravity Falls for another summer. They may be sixteen, but the thrill of the mystery is still there! For the past few weeks, Dipper has gotten little to no sleep. Ever since returning to the Mystery Shack, his dreams have been tormented by a certain dream demon... One day, a stranger arrives at the door of the Mystery Shack. Yellow and brown hair, a triangular eyepatch over one eye, a grin on his smug face, the stranger lets out a laugh. "Long time no see, Pine Tree!" Having somehow been trapped in human form, Bill Cipher makes a deal with Dipper... Bill drives Dipper to the brink of insanity with his violent humor and overall aggravating personality, but there's something there making it impossible for Dipper to deny him help, and it isn't just the deal they made... A/N: The style of Human Bill in this story is Life-Writer's style! So...yeah! Just so you know, and so I don't have to try and describe him!