Unforgiven - S4-E13
Revealing mistake: When Snow White and Prince Charming arrive home at the Royal Castle on horseback, you can easily see that the ones riding are not Ginnifer Goodwin and Josh Dallas, but their stunt doubles. (00:02:55)
Once Upon a Time (2011)
1 mistake in Unforgiven
Starring: Robert Carlyle, Jennifer Morrison, Ginnifer Goodwin, Jared Gilmore
Mr. Gold: She now thinks she's a scantily clad barfly named Lacey. She has a false life, like you did under the curse with Kathryn, only hers apparently involves a lot more alcohol.
Trivia: Every episode intro you can see something hidden in the intro like a building or a creature or a person. This is the same as Once Upon a Time in Wonderland (2013).
Question: I know Henry found Emma via credit card and a website. How did he know to look for her? Regina is strict and it was a closed adoption.
Answer: He knows who she is because he knows that the fairy tales are true. He was also shown to sneak out to go see Emma or someone else. Sometimes he succeeded, sometimes he didn't. This is how he knew to look for her despite his strict mother.