Supernatural What will happen when "Supernatural" returns for Season 10? Photo: CW

“Supernatural” is getting closer and closer to airing its Season 10 premiere with every passing second and every leaked synopsis. That’s right! The hit CW series has revealed the synopsis for the tenth season online – and dare we say Season 10 is way darker than we expected.

According to the summary of Season 10, which is set to air on Tuesday, October 7, the show will open with Sam’s “frantic search for his missing brother, who is gone without a trace.” For those who don’t remember, the last time we saw Dean he had turned into the creature he hates the most: a demon.

Prior to his black-eye debut in the Season 9 finale, Dean was thought to have been dead after Metatron epically stabbed him in a fight. Sam watched helplessly as his older brother died in his arms. But little did he know that Dean would be back and more frightening than ever before.

“The road to recovering the wayward Dean takes Sam down dark paths,” the synopsis continued, “with consequences that will shake the boys to their core.”

As if your brother turning into a demonic entity isn’t terrifying enough! But in all seriousness, what kind of darkness could possibly shake a demon’s core? We’re not sure but have you ever doubted Eric Kripke’s cryptic mind?

Good news for Castiel fans: Your favorite angel will be floating about as a Season 10 regular when “Supernatural” returns. The angel will be forced to “pick up the pieces in the aftermath of Metatron’s campaign,” the synopsis suggests, adding that “with his grace failing and rogue angels still on the loose, Cas will face the ticking clock of his own mortality as all-new threats emerge to once again push all of our heroes to their limits.”

What are your predictions for the upcoming season of “Supernatural?” What terrors do you think will shake the brother’s to their core or prevent Castiel from cleaning up Metatron’s detrimental mess? Sound off in the comments section below with your predictions!