Board Thread:General Discussion/@comment-25926288-20160502010041/@comment-6175354-20160502043638

Rose Hunter wrote: What was the whole point of going to the underworld if Hook was just going to stay there anyway? This episode was an adaptation of the Orpheus and Eurydice myth. Eurydice never left the Underworld, because Orpheus looked back at her. It was lack of patience and loss of faith, that condemned his wife for eternity.

If you look closely, the Underbrooke clock ticked when the portal closed. That was very likely Hook's soul either moving on, or being resurrected.