Once Upon a Time Clip: Snow White Seeks Rumpelstiltskin's Help to Kill the Queen

Snow White is on a mission in the March 18 episode of Once Upon a Time! Flashback to the time when Snow told Charming that she didn't love him after his life was threatened by King George. Heartbroken, she took a potion given to her by Rumpelstiltskin in order to forget her love for him. Since that time, she's been living with the dwarfs, but the potion is seriously messing with her mind.

Case in point: in this weekend's episode, she decides to assassinate the Evil Queen. Fortunately, Charming is on her trail, having called off his wedding to Abigail. Now he's determined not only to reunite with Snow White, but also to stop her crazy plan before she can get herself hurt. But, of course, she doesn't remember him, so that throws a serious wrench into his plans.

In order to kill the Queen, Snow turns to the devious Rumpelstiltskin for help. Grumpy thinks this is a horrible plan, but Snow is determined. Rumple's suggestion is for Snow to kill the Queen while she's on the move, using a bow and arrow. We know that Snow obviously doesn't kill the Queen, but will Charming be able to bring back her memory in this weekend's episode of Once Upon a Time?

Meanwhile, Mary Margaret has serious problems back in Storybrooke, where she'll be arrested for Kathryn's murder. She too turns to Rumple for help...well, she actually turns to Mr. Gold to represent her against the murder charge.

Watch a sneak peek below for the March 18 episode of Once Upon a Time, airing at 8:00 p.m. ET/PT on ABC. You can also watch a preview for the episode here.