Supernatural gives us an intense mid-season finale in “O Brother Where Art Thou?” Sam Winchester (Jared Padalecki) convinces his brother Dean (Jensen Ackles) that they need to at least talk to the Devil, even if they don’t make a deal with him. It’s fantastic to see Mark Pellegrino back on Supernatural. Padalecki and Pellegrino, along with the outstanding set designers, transported us during the scene in Hell. The scenes between Dean and Amara (Emily Swallow) brought their own surprises. “O Brother Where Art Thou” also brought our favorite mother-and-son team back together. You can never get too much Rowena (Ruth Connell) and Crowley (Mark Sheppard). It was fun to have so much focus on several different baddies in Supernatural.