ABC took fans down a "Rocky Road" with Once Upon a Time Season 4 Season 3, an installment of this beloved drama that officially introduced Elizabeth Mitchell as The Snow Queen.
Via a powerful curse in Storybrooke, she left quite an impression on viewers and residents of this fictional town.
Peering ahead to next Sunday, meanwhile, we'll see another villain re-enter the fray, as Once Upon a Time Season 4 Episode 4 is titled "The Apprentice."
Based on the following footage, it will depict Hook changing his appearance (and getting asked out by Emma!), along with Anna telling Rumplestiltkin that she'll do "whatever it takes" to help her sister.
As we know all too well, however, that can be a dangerous thing to say...
Check out the official network teaser above and visit our friends at TV Fanatic if you need to watch Once Upon a Time online. They make it very easy to do so.