Many details regarding Once Upon a Time's third season have been released this week, including the premiere episode title and specifics about Robin Hood and Peter Pan.

The first episode of Once Upon a Time season 3 will be called "The Heart of the Truest Believer", according to a Tuesday tweet by co-creator Adam Horowitz.

It is unknown when this episode will air because ABC has not released a list of premiere dates for its fall shows yet.

This season, the Robin Hood character will return, according to TVLine, but he is currently being recast because original portrayer Tom Ellis is unavailable.

Peter Pan will also appear in season 3, but producers are keeping their chosen actor under wraps. The report suggests that they may be waiting for the 2013 Comic-Con convention on July 20 to reveal the actor. Additionally, producers are casting for Rufio, the leader of The Lost Boys from the Peter Pan novels.

Horowitz has only revealed that Peter Pan will be played by a male, which he confirmed on May 15. Producers only recently got the rights to feature Peter Pan in a storyline, which is why he hasn't been featured in the show's first two seasons. When they finally got the rights, they introduced Captain Hook in season 2 and are planning to expand the world in season 3 with Peter Pan and The Lost Boys.

More details will likely be revealed at Comic-Con, which will feature a Once Upon a Time panel with the cast and crew.

Once Upon a Time will be airing in Fall 2013 on ABC on Sundays at 8 p.m.

Watch a full recap of season 2 by Horowitz and co-creator Edward Kitsis:

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