Supernatural Season 5 Episode 20 (Supernatural s05e20) with title “The Devil You Know” airs on Thursday, April 29th 2010 at 09:00 pm via The CW Network. In this 20th episode, you can watch The demon Crowley tells Sam and Dean he can help them find the remaining Horsemen rings so they can trap Lucifer. The brothers are doubtful until Crowley leads them to Brady, the Handler for Pestilence and Death.