Board Thread:Spoilers!/@comment-1916997-20160130171349/@comment-25551215-20160224043931

Here's an article with 100th episode stuff that I found elsewhere on the forum: http://www.screenspy.com/articles/tv/once-upon-a-time-exclusive-scoop-on-the-100th-episode/

My take on 5B:

512, 513, 514, 519, and 520 will all be Underworld-centric episodes.

515 will be less focused on the Underworld and Hades and more focused on Hook.

516 will enter Belle and Zelena into the Underbrooke stage.

517 will be Belle-centric and will be about Belle finding out Gold is the DO. Chaos ensues.

520 will wrap up Underbrooke and the "Operation Firebird" plotline, leading us into a 3-part finale.

521, 522, and 523 will be a Storybrooke-centric finale.