I Know What You Did Last Summer

Ruby tells Sam and Dean that a powerful demon named Alastair is searching for a girl named Anna who can hear the angels' conversations. The three set out to find Anna but once they do, Alastair attacks them and Ruby escapes with the girl. Believing they were set up, Dean lashes out at Sam for trusting Ruby, so Sam tells him what happened during those months Dean was in Hell and how Ruby saved his life. Castiel and Uriel return and demand to be taken to Anna but not for the reason Dean thinks.