Supernatural: Bloodlines

At Comic Con 2013 Executive Producer Bob Singer announced that a spin-off series for Supernatural was being planned. It would begin as an "embedded pilot" with new characters introduced in Episode 20 of Season 9, to be written by Andrew Dabb. Source.

Singer explained that:

"It’s an entirely different cast of characters. And unlike Supernatural – which is a road show — this will take place in one place (Chicago) with a wider cast of characters. (It will) explore the clashing monster and human characters living in the city...We’ll have main characters who are both human and monsters. That will include, families of monsters and families of hunters. It’s much more of an ensemble than Supernatural. Source

On August 1st 2013, CW President Mark Pedowitz said:

"It will be set in Chicago. There will be hunters. There will be monsters [...] I don't believe anyone is intending to have continuing characters in it that are presently on Supernatural". Source.

30th January 2014:

• Supernatural spin off series to be called Supernatural: Tribes. The backdoor pilot is written by Andrew Dabb adm Directed by Bob Singer.