Official CW synopsis for Supernatural’s April 15 episode, ‘Book of the Damned’ March 26, 2015 Updates CW has released the episode information for their April 15 episode, ‘Book of the Damned.’ Click here for the information. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Reddit (Opens in new window) Related