The Magicians Comes to a Close in Action-Packed Finale: Here's Where Everyone Ends Up

When the Beast shows up in the library, Zelda tries to hold him off so that Alice and Fen can escape through the portal and get back to Earth. She then initiates "permafrost" so that the Beast can't use the rest of the portals to escape. Although she stops the Beast from getting lose, he eventually kills her.