Grease Fan Theory: One of the Stars Is Actually Dead

Think this peppy musical is supposed to be fun and lighthearted? Not after you see this.

Grease Fan Theory: One of the Stars Is Actually Dead
Paramount Pictures

It's one of the most popular fan theories on the internet. It's also one of the most disturbing. And now, it's also right here, in our latest edition of Insane Fan Theories! 

If you're also a fan of it-was-all-a-dream-type theories, this one is definitely for you, too. The jist: Grease, that 1978 musical you thought was just about high-school romance and cardigan sweaters, is actually a whole lot deeper -- and darker. We won't spoil it for you. Take a look.