Invasion of the Book Snatchers

Invasion of the Book Snatchers is the seventh episode of the second season of the animated sequel television series Back to Gravity Falls.

Plot
While Mabel buys all the books from the library, the books start to come alive and snatch Dipper and Mabel, but not after the two begin to defeat them.

Cast
Jason Ritter as Dipper Pines

Kristen Schaal as Mabel Pines

Alex Hirsch as Grunkle Stan, Soos Ramirez and others

Linda Cardellini as Wendy Corduroy

Jessica DiCicco as Tambry

Niki Yang as Candy Chiu

Carl Faruolo as Grenda

Frank Welker as the Book Snatchers

and more!

Trivia

 * The episode's title is a reference to the 1956 film Invasion of the Body Snatchers.
 * The books that Mabel bought at the library were "The Unicorn from the Past", "Cats Love to Play", "Searching for Love", "The Destroyed Castle in Maine" and "Wrath of the Thunderdogs".