Secrets were exposed and the stage was set on this week's installment of The Walking Dead, as fans prepare for next Sunday's midseason finale.

Yes, it's already time to say goodbye to Rick, Lori and company: the AMC drama is about to go on hiatus until February.

What cliffhangers will it dangle before doing so? Look for a serious threat to emerge from a surprise source on the upcoming episode, while Rick and Hershel are forced to work together in order to avoid a dire fate. Elsewhere, as teased in this official preview, Dale has it out with Shane. Watch now.

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