Supernatural: Bloodlines was a potential spin-off of the hit TV show Supernatural that was set in Chicago and introduced new characters. However, the backdoor pilot received poor reviews and ratings, possibly due to the absence of main characters Sam and Dean and the different tone compared to the original series. As a result, The CW decided not to pick up the spin-off, and the issue of the monster problem in Chicago was never addressed in the original show.

This was not the first time Supernatural had faced challenges with spin-offs, as another potential spin-off called Wayward Sisters was also canceled. There were discussions for years about expanding the Supernatural universe. The show had previously featured the Ghostfacers in a single-season web series and released Supernatural: The Anime Series. By its ninth season, The CW was eager for more Supernatural content, especially after the success of The Vampire Diaries spin-off, The Originals. This led to the premiere of "Bloodlines" as a backdoor pilot at the end of Season 9, setting the stage for a larger story. "Bloodlines" takes place in Chicago and follows Ennis Ross, a young aspiring cop who witnesses his almost-fiancée being killed by a monster. Ennis is then introduced to the underground world of monsters. He teams up with David Lassiter, a shapeshifter seeking revenge for his brother's death. Eventually, the duo meets Sam and Dean Winchester, who inform them about the existence of monsters in Chicago. They discover that the city is controlled by five monster "Mafia" families, including vampires, werewolves, and Djinn. Together, they try to save a young werewolf named Violet Duval who has been kidnapped. One interesting aspect of "Bloodlines" is the partnership between Ennis and David, a human and a monster working together.

The article is not finished. Click on the next page to continue.