Following a Sunday off, what can fans expect when Once Upon a Time returns this week with "Into the Deep?"

The episode will feature a heavy dose of Cora, as she's intent on tracking down the mysterious compass and using it for her own nefarious purposes. Watch her confront Hook over its whereabouts in this sneak peek:

It also looks like Cora will come up with a plan to get what she wants. As teased below, it involves Aurora and Snow/Emma's well-meaning hearts:

Finally, in Storybrooke, David will devise a scheme of his own. It will also have a lot to do with Snow's heart, along with her lips, as he urges Mr. Gold to send him back into the slumber in which we first found him way back on the Once Upon a Time Season 1 premiere. See what we mean now:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.