The CW Network released an official promotional trailer for Supernatural star Misha Collins’ guest appearance on Whose Line Is It Anyway? via their YouTube channel late last night.

The trailer shows next week’s returning improvisational participants: Wayne Brady, Colin Mochrie, Ryan Stiles, and Brad Sherwood.  These four veterans will create madness and laughter on stage alongside Collins.

The episode airs Monday, June 16 at 8.7c on The CW.

For the full story on Misha Collins’ guest appearance on the show, click here.