Biff's Almanac Theft

Lore & Background

The theft occurs in the near future, where an elderly Biff removes the Almanac from the DeLorean while Marty and Doc are occupied. In the altered timeline, Young Biff uses the book's predictions to win bets and amass immense wealth. This corrupts local government and police forces, turning Hill Valley into a dystopia ruled by the Tannen family. They realize that as long as the book exists in the past, the alternate timeline cannot be erased completely.

In Their Own Story

Rain slicked the pavement of the Twin Pines Mall parking lot as the old man approached the silver car. His eyes gleamed with greed under the fluorescent lights. He reached into the passenger seat, fingers brushing against the leather-bound volume. With a triumphant grin, he snatched the book and vanished into the shadows, leaving only the echo of his footsteps behind.

Reader's Guide

In the second film, Marty and Doc travel forward to witness a grim future where Biff Tannen murdered George McFly. In the altered timeline, Young Biff uses the book's predictions to win bets and amass immense wealth, corrupting Hill Valley into a dystopia ruled by his family. Marty locates the book in Old Biff's possession during a confrontation at the Twin Pines Mall. He retrieves it before its knowledge can fully cement the new reality. Marty burns the book in a trash can, destroying the source of the corruption. The paradox resolves as history reverts to normal, though traces of the event linger in memory for those who experienced it. This arc highlights the danger of changing history with foreknowledge and the fragility of time travel mechanics when physical objects cross temporal boundaries without authorization.

Did You Know?

• In the altered timeline, Young Biff uses the book's predictions to win bets and amass immense wealth.
• Marty burns the book in a trash can, destroying the source of the corruption and reverting history to normal.