I'm No Angel is the 3rd episode of Season 9. It will air on October 22, 2013.
Summary
CASTIEL IS HUNTED BY THE ANGELS --- Ezekiel tells Dean (Jensen Ackles) a group of angels is hunting Castiel (Misha Collins). Dean and Sam (Jared Padalecki) race to find their friend before the angels do. Meanwhile, a homeless Castiel is trying to make his way through the city and comes across some unexpected surprises.