Once Upon a Time sneak peek: Emma reveals reason behind mysterious plan 

The whole time Emma has been plotting away as the Dark One, it’s all been about … Hook?

, Hook (Colin O’Donoghue) confronts Arthur (Liam Garrgian), who gets the upper hand. But before the king can kill the pirate, Dark Swan (Jennifer Morrison) steps in to save him with the full-formed Excalibur sword. Hook uses this opportunity to get to the bottom of Emma’s plan, though he probably wasn’t expecting the shocking revelation to be about him. Check it out:

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