There is a new episode airing tonight on The CW.
It's called Malleus Maleficarum.
When I saw the episode name in the TV Guide, I thought, oh, they're doing witches. Malleus Maleficarum is the name of the book written by Heinrich Kramer and Jacob Sprenger in 1468. It was the main text used my witch hunters for centuries. Link. What can I say? I got on a Salem Witch Trials kick in high school and did a lot of research. I always was a wierd kid.
The CW website gives the following as a description:
Sam (Jared Padalecki) and Dean (Jensen Ackles) travel to Sturbridge, Massachusetts, and discover a coven of witches that has killed two people. Ruby (Katie Cassidy) warns the brothers to stay away as the demon controlling these witches is very powerful and will surely kill them. Ignoring her plea, Sam and Dean go in after the coven and confront the head witch, who reveals Ruby's past.
Robert Singer directed the episode written by Ben Edlund.