Once Upon a Time Photos: "Operation Mongoose Part 1"

On this Sunday's Once Upon a Time season finale, the Author turns out to be the wild card that Storybrooke never saw coming, as he teams up with Rumpelstiltskin to give heroes and villains a whole new twist.

Once he's done, will anyone get their happy ending?

Check out these photos from Once Upon a Time Season 4 Episode 22, "Operation Mongoose Part 1," scheduled to air Sunday, May 10th on ABC...

1. Villains Become Heroes - Once Upon a Time Season 4 Episode 22

Did you ever think you'd see Rumpelstiltskin as a hero? It appears he and the Author have turned the tables in the Once Upon a Time season 4 finale.

2. A New Outfit - Once Upon a Time Season 4 Episode 22

Playing the hero means that Rumpelstiltskin gets a whole new outfit. Here he's rockin the leather, including the pants. Between that and the sword, he's looking pretty good as a hero.

3. Hook's Still Got His Hook - Once Upon a Time Season 4 Episode 22

Is Killian a hero or a villain? He's played both over the years so which one will he become once the Author writes his story? Either way, it appears he still has black leather jacket and his hook.

4. Absolutely Devastated - Once Upon a Time Season 4 Episode 22

Emma looks absolutely devastated! What's happened? Is she back in the Enchanted Forest and will the Author bring out her dark side?

5. Rewriting Their Story - Once Upon a Time Season 4 Episode 22

The last time the Author rewrote Snow White and Prince Charming's story they ended up banishing Maleficent's child to another realm. What does he have in store for them this time?

6. The Shocking Twist - Once Upon a Time Season 4 Episode 22

The Author's quill will supply a shocking twist that will leave all the residence of Storybrooke reeling by the end of the season 4 finale.

7. Robin Hood - Once Upon a Time Season 4 Episode 22

Robin Hood is looking good. If this is the way the Author wants to write him, we approve.

8. The Evil Queen No More - Once Upon a Time Season 4 Episode 22

Where's our Evil Queen? Certainly not here. Regina has the look of a young woman in love. We can only hope her eyes are on Robin Hood.

9. Robin Is Devastated - Once Upon a Time Season 4 Episode 22

Something must be terribly wrong back in Storybrooke to put that look on Robin Hood's face. He's been through an awful lot this season. Hopefully he'll survive to be back for more.