Once Upon a Time Season 4 Episode 18: Full Episode Live!

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The author is on the loose and all of Storybrooke is out to find him on Once Upon a Time Season 4 Episode 18 but no one can beat Mr. Gold who has exactly what the author needs...a magic quill.

But Gold also needs to turn Emma's heart dark and decides he'll need Regina's help to do it. When she refuses, he reveals a terrifying secret. 

Weeks earlier in New York City, Gold had a heart attack. Without the protection of magic, his heart is dying due to all of the darkness he's inflicted over the years. He needed a special elixir left behind when the Wicked Witch sent her minions to NYC. He gets Robin to steal it for him but Marian switches the vials so he doesn't get the real thing. 

Has Marian turned dark now that she's in this world? No, it's something far worse. This isn't Marian at all. Marian is dead and the person inhabiting her body only has one goal, to hurt Regina. 

Find out who wants to keep Regina from her happy ending permanently. Watch Once Upon a Time online now, here at TV Fanatic. 

C. Orlando is a TV Fanatic Staff Writer. Follow her on Twitter.

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Once Upon a Time Season 4 Episode 18 Quotes

You are quite possibly the biggest pain in the ass I have ever had the displeasure of writing about.

The Author

I am only the savior because you altered the entire state of my being at the expense of someone else's soul.