Only three episodes remain on Once Upon a Time Season 2.

And with the walls closing in on Regina's life in Storybrooke, look for the evil queen to come up with a sinister plan on the aptly-titled "The Evil Queen" this Sunday. But, hey, at least she's honest with Henry about it!

Watch her spill the beans in this sneak peek:

Elsewhere, David and Mary Margaret will plot their own escape from time, debating how to handle Regina in the process:

Finally, look for Emma to grow very concerned over Tamara and to share those concerns with her BFF. What is Mary Margaret's take on the situation? Check out our third clip and see for yourself:

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