Tonight’s time-traveling episode returns to Prohibition, specifically in 1931 Chicago, to go all gangsta for a while. This series’ co-creator, Eric Kripke, reaches out to a recurring player from his previous series, Misha Collins (the angel Castiel on the CW’s Supernatural), to play the role of gangster-hunting Eliot Ness (pictured). In this episode, the gangster being hunted is none other than Al Capone.