Supernatural delved into Sam's past on the most recent episode of this CW hit, a somewhat disappointing hour that only earned a 3.8 rating from our critic.

Where will the brothers go next? Away from Sam for Dean, as he races to home to rescue Lisa on Friday's "Mannequin 3: Reckoning," following a frantic call from Ben. But this sibling won't be prepared for what awaits him there.

Sam, meanwhile, will be left alone on an investigation into a series of murders and their connection to a female co-worker of the victims. Get your first look at the upcoming episode now:

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