Fringe is about to embark on a new beginning, with a new dimension.

What, exactly, can fans expect on the September 23 season four premiere? Fox has released the official episode summary for "Neither Here Nor There" and it reads:

Just one week after Peter Bishop saved the day and was then wiped from existence, the truce between the two worlds remains intact and the two sides are forced to work together. Lincoln Lee joins the Fringe team as they investigate a shapeshifter case that is very personal to him.

Get a look at Lincoln, along with a handful of premiere pics, below. Click on each to enlarge...

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