Hmm, looks like the studio heads have really got one over on Mila Kunis and the 'Oz: Great and Powerful' gang here. The movie doesn't hit theaters until tomorrow (March 8, 2013) though Disney has already persuaded the Hollywood actress to sign up for a sequel. The problem is, nobody else seems to known about the potential of a franchise, especially Sam Raimi who outright denied signing on the dotted line.

With lukewarm reviews at best, the prequel to 'The Wizard of Oz' isn't going to be among the critics' best movie lists of 2013, though Disney will be hoping it smashes the competition at the box-office and recoups some of its reported $200 million budget. Mila Kunis will also be praying for big numbers after telling E! Online's Marc Malkin, "We're all signed on for sequels." Hmm, that's not what Rachel Weisz, or Michelle Williams, or Sam Raimi says.

Weisz wasn't as concrete on the possibility of playing evil witch Evanora, saying, "I hope so," before adding, "If there is one, I'd love to be in it." Maybe she should have words with Mila.

Elsewhere, Michelle Williams said she'd only return for a new movie if director Raimi gets back in the saddle. "Wherever Sam goes, I'll go. I'd do anything Sam asks me to do. I'd get stuck in quicksand with him." Hmm, well, she might not want to hear what the filmmaker had to say. "I'm not signed up for a sequel and I have no plans right now to make a sequel. I don't know where Disney is with that. They are probably waiting to see what the critical response is and what the audience response is and how well it does at the box office."

So, just to recap. Disney are planning a sequel, which Sam Raimi is not directing, Michelle Williams and Rachel Weisz don't know about, and Mila Kunis is starring in. Unpick that one. 

Watch the trailer for Oz: Great and Powerful: