User blog comment:Norgaladir Elf/Alternate Endings/@comment-26222895-20150508005638

Alternate Ending to The Hobbit:

At the end of the book, Gandalf is delayed on his journey to the lone mountain and never shows up. This means that Thorin actually kills Bilbo when he finds out that he gave the Arkenstone to the enemy and does not die in the battle. He then becomes King under the Mountain, but is so mad at himself that he killed Bilbo that he kills himself like Denathor. Meanwhile, back in the Shire, the Sackville-Bagginses take over Bag End and are very mean to everyone. Gandalf eventually shows up and kicks them out and starts living there himself and adopts and raises Frodo. However, because Bilbo died at the Lone Mountain, the ring is buried with him so it does not become a problem untill much later, when Gandalf gets curious about it and uncovers it and takes possestion of it. This results in Gandalf becoming Sauron Number II and he goes into Mordor and distroys Sauron Number I and becomes the Evil Lord of Mordor. Unfortunatly for him,  Frodo shows up and makes Gandalf realize what he has become, so he kills himself, hense the 4th age begins.