7. Society of the Blind Eye

Complete story — includes the ending

When Dipper, Mabel, Soos, and Wendy confront Old Man McGucket about his connection to the author of the journals, they discover a secret society in Gravity Falls that erases people's memories of the supernatural. Guest star: Peter Serafinowicz as Blind Ivan Note: This episode features an Easter egg crossover with Rick and Morty, via a pen, notepad, and mug, which previously emerged from a portal in the Rick and Morty first season " Close Rick-counters of the Rick Kind " (which aired almost seven months earlier, on April 7, 2014), in this episode being accidentally dropped through the other end of the same portal by Stan Pines.