The Winchester brothers have had their fair share of beasts, demons, and green-faced witches, but they were really hoping that they wouldn't have to see Oz again. Unfortunately for Sam and Dean, Charlie has returned, and she may bring a little taste of Oz with it.

Last time we saw the code-cracking, smart-mouthed character Charlie, she was happily joining her beloved Dorothy into Oz. Dean had not wanted her to go - warning his friend of the dangers of Oz. But she had made her choice.

When the gateway was closed, Dean worried he would never see Charlie again. Sam comforted his brother, "There's no place like home."

Well, Charlie certainly feels the same way. According to the synopsis of the 11^th episode, "There's No Place Like Home," Charlie will reunite with her old friends, but there's something fishy about her, and it has nothing to do with her cool new 'do.

In a promo video for episode 11, Dean is taken aback when he sees his sweet friend Charlie holding a knife to an old woman's throat. "What the hell happened to you in Oz?" Dean asked.

"Everything I wanted," Charlie said.

Supernatural Executive Producer Jeremy Carver wouldn't give away everything, but he did hint that Charlie's transformation had something to do with Oz. "Charlie definitely comes back from Oz somewhat different - and that's an understatement. Things happened. And typically, what happens in Oz, stays in Oz, but not this time. It's all coming back. Suffice to say, we're going to see a Charlie that has been substantially changed."