The final episode of "Once Upon A Time" season 5 introduced the Land of Untold Stories, a world where literary fictional characters dwell.

The Land of Untold Stories is entirely different from the series' usual beat of Disney fairy tales, as it features references to classic literary pieces such as the Three Musketeers, Don Quixote and Gulliver's Travels.

"Once Upon A Time" season 6 will feature Dr. Jekyll and Mr. Hyde as one of the new villains. The revelation of the whole new world of the Land of Untold Stories is expected to pave the way for the entry of new characters and interesting stories in the upcoming season, especially now that at least two characters have been confirmed to make their debut in season 6.

In the season 5 finale, Mr. Hyde arrived in Storybrooke with his group of friends from the Land of Untold Stories. According to reports, two of them will be Sinbad the Sailor and "One Thousand and One Nights" storyteller Scheherezade. ABC is reportedly looking for actors to play both roles.

Meanwhile, some reports claim that season 6 will also feature the wedding of Emma and Hook, as most of season 5 focused on them trying to rescue each other when Emma became the Dark One and Hook went to the Underworld.

It can be remembered that their reunion in the season 5 finale featured a wedding gown in the background.

Asked if wedding bells are ringing next season, executive producer Edward Kitsis said, "I would say you'll have to watch season 6; you never know what's going to happen."

"Once Upon A Time" season 6 premieres this fall on ABC.