For the past several months, the internet has been abuzz with rumors over whether Bill Murray would actually reprise his role as Dr. Peter Venkman in 'Ghostbusters 3.' One story even alleges the actor hated the idea of a third movie so much that he sent back a shredded script. Well, it looks like the 'Ghostbusters 3' rumor mill may begin to churn again courtesy of an actor we never expected -- William Shatner.

Earlier today, the 'Star Trek' actor tweeted a picture of himself wearing a proton pack with the following message: "Who ya gonna call? SHATNER! I ain't afraid of no ghosts!" Interestingly enough, Shatner makes a convincing Ghostbuster and looks ready to battle Zuul all by himself.

What do you think the image means? Will Shatner star in the new 'Ghostbusters' movie? Or is he just playing dress-up? Take a closer look at the photo and feel free to discuss and speculate wildly below.