The CW has released a few stills from the fifteenth episode of Supernatural‘s eighth season, titled “Man’s Best Friend with Benefits.”

These few episode stills don’t tell us much, but we do know a few things. For instance, we know that Dean Winchester hates witches — really, really hates witches. Unfortunately for him, he and Sam will have to face another one in this episode.

According to the synopsis, “Man’s Best Friend with Benefits” will feature Kevin, a police officer “who turned to witchcraft after working a case with Sam and Dean.” Kevin is “plagued by nightmares in which he murders innocent people.”

But when the murders actually start happening, Kevin’s familiar calls in Sam and Dean to help. But after a host of negative experiences involving witches over their hunting careers, “the brothers aren’t sure they want to save a witch.”

We’re curious to find out when Kevin worked the case with the brothers and what might have pushed him toward witchcraft.

“Man’s Best Friend with Benefits” airs Wednesday, February 20 at 9:00 p.m. ET.

Looking for more ‘Supernatural’?

We have the episode synopsis and stills, as well as a promo and preview clip from next week’s episode, “Trial and Error.”

We also have the synopsis for the sixteenth episode of the season, “Remember the Titans.”