A preview from episode 4.10 of "Supernatural" is released. With the title "Hell's Angels", it revolves around the Winchester brothers, Sam (Jared Padalecki) and Dean (Jensen Ackles), as they struggle to save Anna, who played by Julie McNiven.
As Anna remembers her past, Sam and Dean begin to understand the reason behind Castiel and Uriel's hatred and why the two want her dead. Ignoring the angels' orders, Sam and Dean try to help Anna restoring an important part of her past so she can be saved.
Meanwhile, Alastair, who is guest-starred by Mark Rolston, and his demons continue to track down Sam, Dean and Anna.
Guest starring Misha Collins and Robert Wisdom, "Hell's Angels" is scheduled to air on The CW, November 20 at 9/8c.