No way Spencer is A... right? Or working with A in some manner at least? That's the latest theory posed by our critic, based on this week's episode of Pretty Little Liars.

Looking ahead, tension will continue to mount between the group on the January 31 installment of this ABC Family hit, titled "If At First You Don't Succeed, Lie, Lie Again."

As previewed below, viewers can expect Emily to butt heads with a teammate; Spencer to turn to Ali's brother; and Aria to plan an actual, public date with Ezra. Is there any way that's a good idea?!?

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