“Supernatural” season 9 spoilers are up and supervising producer Andrew Dabb teased that it’s going to be a shocker, enough to keep fans looking forward to season 10.

Meanwhile, the spinoff “Supernatural: Bloodlines” will finally air tomorrow after months of anticipation. The showrunner told E! that having done the “Supernatural” for nine seasons now, keeping the material fresh can be very tricky. Nonetheless, they are up to the challenge and the finale for season 9 promises to whet the appetite of the show.

"We leave our guys in a situation they've never faced before, which after nine seasons, it kind of narrows it down a little bit," he said. "I think once they see the last frame of the last episode, I think people are going to be incredibly excited for Season 10," Dabb added, talking about “Supernatural” season 9 spoilers.

Dabb likewise dished out on more “Supernatural” season 9 spoilers with the “Bloodlines” episode set to air tomorrow including a twisted take on “Romeo and Juliet” love story and the possibility that it’s going to evolve into a series.

In “Supernatural: Bloodline,” David (Nathaniel Bozulic) and Violet (Melissa Roxburgh) will fall in love but keeping to the strange elements of the show, there’s a big problem: he’s a shapeshifter and she’s a werewolf.

Dabb told TVLine that both David and Violet are a couple three years ago but the relationship “ended in a very bad way". So with the pilot episode, they are trying to rekindle the romance even if they hurt each other in the past. He also said that “Supernatural: Bloodlines” is envisioned to become a series but it could depend on the availability of Sam (Jared Padalecki) and Dean (Jensen Ackles) who are both tied to the “Supernatural” show.

"Should ‘Bloodlines’ go forward, we’d love to have them back if things worked out scheduling-wise,” he said. “And if we could find a story that’s cool and doesn’t feel like a repeat of the planted pilot.”