[s2e8] Into The Deep -

You can find this episode on streaming platforms such as Apple TV or Disney+. "Once Upon a Time" Into the Deep (TV Episode 2012) - IMDb

: Cora kidnaps Aurora to use her as leverage and does everything possible to secure the compass to find a way to Storybrooke. [S2E8] Into the Deep

Allied with Emma and Mary Margaret; Aurora is kidnapped by Cora. You can find this episode on streaming platforms

To enter the Netherworld, Mary Margaret initially goes to sleep, but eventually, David must be put under a by Regina and Mr. Gold to reach her. To enter the Netherworld, Mary Margaret initially goes

: Cora attempts to steal the enchanted compass from Emma and Mary Margaret in the Enchanted Forest, while David puts himself in danger in Storybrooke to communicate with them. Key Plot Points

The episode references the "old-fashioned way" of delivering a sleeping curse via a (directly into the bloodstream) versus the later innovation of a poisoned apple.

: Aurora refuses to help Cora even when offered a chance to save Phillip, choosing to protect her friends instead. Major Characters Role in Episode Emma Swan