When The Vampire Diaries returns on September 9, there will be a lot going on around Mystic Falls. Most notably: Katherine is back!

But aside from the suspense and intrigue of modern day storylines, producers have admitted the show will once again flash back to past years and/or decades at certain points of season two. What/who might viewers see during these special episodes?

In the latest E! News spoiler column, the following teases help answer that question:

• Bianca Lawson (Mya on Pretty Little Liars) says of her Vampire Diaries character: "Emily Bennett's coming back to maybe be a good witch, maybe be bad witch."
• Producer Kevin Williamson confirms that a couple individuals who died on season one could be seen again via flashbacks. Who else has his/her fingers crossed for Anna?
• Answers about Katherine will come out. Williamson added: "Why wasn't she in the tomb? How did she escape? Where did she go? Why did she come to Mystic Falls to begin with? What brought her to Mystic Falls? There's all those fun questions that we're gonna explore."

As long as Stefan's shirt is unbuttoned, many Vampire Diaries fans won't care what year an episode is set in.

** Remember to check out a series of photos from the season two premiere NOW!

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.