Supernatural: On the Head of a Pin
Air Date: March 20 on The CW

This one’s looking a little brutal and I’m told you won’t want to miss the last 20 minutes!

Someone found Lucifer’s sword and is using it to kill angels. Castiel (Misha Collins) and Uriel (guest star Robert Wisdom) have captured Alastair (guest star Christopher Heyerdahl) and ask Dean (Jensen Ackles) to use the torturing skills he learned in Hell to extract information from him so they can stop the murders. Sam (Jared Padalecki) is concerned Dean can’t handle the job but Dean agrees to do it. …read more

I don’t know too much about this one except that Pamela returns for a case about someone killing reapers! It’s the first episode back from hiatus, which I’m hearing may be a week later than planned — so try March 12.
Couple of interesting notes, Christopher Heyerdahl from Sanctuary and Stargate Atlantis moves into the role of Alistair and Tessa, the reaper from In My Time of Dying also puts in an appearance. And finally, did Sam’s sweater shrink in the wash?
ETA: Got the official synopsis:
SAM AND DEAN HEAD INTO THE SPIRITUAL WORLD — Sam (Jared Padalecki) and Dean (Jensen Ackles) …read more