The Brothers Jones

"The Brothers Jones" is the 103rd episode of Once Upon a Time.

Summary
Finally reunited, Hook and Emma must find a way to defeat Hades so that they can return to Storybrooke with the others, and a surprise visit from the pirate's dearly departed brother Liam might just provide them with the lead they're looking for. Others who have tried to overthrow the Underworld's leader spoke of a book that contained the key to his downfall; while the others search for this book, Henry secretly takes matters into his own hands, tired of watching from the sidelines. Meanwhile, Hades redoubles his efforts to trap the heroes in the Underworld by playing them against one another and, in flashbacks, the bond between the two young Jones brothers is tested and strengthened on a merchant ship heading into a dangerous storm.

Trivia

 * Although credited, Emilie de Ravin (Belle Gold/Belle), Rebecca Mader (Zelena/Wicked Witch), Sean Maguire (Robin Hood) and Robert Carlyle (Mr. Gold/Rumplestiltskin) are absent from this episode.

Production

 * The title of this episode was officially confirmed by executive producer/co-creator Adam Horowitz, via his Twitter account, on January 10, 2016.

Gallery
Gallery of photographic stills released to promote the episode.