'Once Upon a Time': Giancarlo Esposito returning in Season 4 premiere
Giancarlo Esposito is set to return to ABC's fairytale drama in the Season 4 premiere, TVGuide.com reports.
Esposito was last seen on "OUAT" as Sidney Glass, a.k.a. the Magic Mirror, locked away in the basement of Storybrooke's hospital. Will he return with a vengeance?
Esposito's former "Revolution" star Elizabeth Mitchell was also recently cast on "OUAT," though her role is a bit more secretive. The only details revealed about the "Lost" alum's new character is that she is a "possibly malevolent" person who has ties to "Frozen" sisters Elsa and Anna.