In a black-and-white world reminiscent of classic horror flicks, the brothers tangle with a vampire, a werewolf and a mummy who are thinning the crowds at a quaint Oktoberfest.

In order to track down Diaz from inside prison, Oliver realizes that will require aligning with an old enemy. Meanwhile, in Star City, Felicity’s attempts to root out Diaz are…

A dangerous creature is accidentally released into an old house, attacking a mother and her child, leaving them both in a coma. Sam and Dean learn that Bobby and Rufus…