After Regina, Piper and Nico left for a world in which Mr Gold had no idea where or why they needed to be there, he kidnapped Mary Margaret and hid her in her very own home and chained her to her bed.
"You can't keep me here forever, Gold." said Mary Margaret.
"I don't need to, dearie." said Mr Gold. "I just need you to tell me where the Queen left and what she wished to retrieve that needs the children of Hades and Aphrodite for."
"I'm not telling you anything."
"You know, dearie, you heroes are so... peculiar. You are given two choices and you pick the hard one in which I need to kill you."
"You can kill me if you want Gold; you're not getting any information from me."
"We'll see about that."
Mr Gold made a potion that answers all of his questions for him. He took a strand of hair and a drop of blood from Mary Margaret and added it into his concoction. He then forced Mary Margaret to chug it down and he could get all of the knowledge he seeked.
"Which realm did the Evil Queen go to?" asked Mr Gold.
"I have no idea."
"Strange. Regina would never go anywhere where she doesn't know or have power over. Why does she want to go into this unknown world?"
"To find Dr Facilier."
"The Shadow Man? Why does she need him?"
"To get into the Vault of Love and fulfil the prophecy."
"Yes, I never did get to hear about the prophecy. Tell it to me!"
"To find the blade made of endless fire,
True love shall soar like in a palus,
One in which was thought impossible by all,
And with that power the Vault of Love one shall guide,
But be warned as Love is wide of the mark,
For thee blade shall reunite with its astray."
"Interesting, very interesting. What do you know about it, dearie?"
"Excalibur is the blade of fire, true love shall get us to the Vault, the blade is in the Vault of Aphrodite, we could never trust Aphrodite and Excalibur will end up with its astray... you."
Mr Gold smiled, "That's all I needed; now... I kill you."
"No!" shouted Percy who just smashed down the door and held his blade at Mr Gold.
"You tried this before, dearie, I cannot die by your sword." said Mr Gold. "Kids never learn."
"Well, dearie, this blade belonged to Heracles and is forged from Celestial bronze and can wound a God. You're right, it can't kill you but it can hurt you badly."
"Well played." smiled Mr Gold and teleported away.
"You found her!" laughed David coming into the room. "Except I need a new door..."