Graceland's Paul Briggs has crossed the line...again.

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There have been many times over the last three seasons when we've declared the residents of Graceland have officially past the point of no return, but "No Old Tigers" capped off season 3 with a transgression that Briggs will be hard pressed to blot from his record.

No matter what Ari did - no matter how truly despicable, gruesome, and just downright horrible it was - his execution forced Briggs to cross "a very, very dark line," and bring the rest of his team down with him.

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"It's probably the most obvious line they've crossed," series creator Jeff Eastin told TV Line. "We end the season in this fractured place where Briggs has without a doubt crossed a very, very dark line."

Despite what Briggs may say about self-defense, Eastin assures viewers Ari's death was "cold-blooded" and always meant to be that way.

While USA has yet to pick up the series for a fourth season, the EP teased a possible storyline for next year. From the sounds of it, someone (or multiple someones) will leave the house behind, but their break with the team won't necessarily mean their departure from the show.

"Assuming we do get a Season 4, which we're hopeful about, there's some really cool story stuff that we really want to do," Eastin explained. "There's a song at the end of the finale, one shot on Briggs' face, that may give you a hint on who would be the final person remaining in Graceland if everybody else can't be."

What did you think of "No Old Tigers"? Tell us in the comments below!