Supernatural bid farewell to its viewers with an episode our critic awarded with a 4.2 rating last wee. Find out why HERE.

The CW hit is now off until April 15, and it's offering few clues regarding what we'll see upon its return. All we can verify is that the first installment of the spring will be titled "Frontierland."

The following promo for it is intriguing.... but quiet and mysterious:

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