Warning: Full spoilers for the episode follow. Ever since November, Gravity Falls fans have been waiting for the conclusion to "Weirdmageddon" and the series as a whole. Now, at long last, that time ...

In the heart of the nation's capital, in a courthouse of the U.S. government, one man will stop at nothing to keep his honor, and one will stop at nothing to find the truth.

The final battle for Gravity Falls. The Pines family and their allies try to stop Bill before it's too late.

Find out how to watch Gravity Falls: Weirdmageddon -4. Stream Gravity Falls: Weirdmageddon -4, watch trailers, see the cast, and more at TV Guide ...