The story includes mild spoilers from the Season 4 premiere of HBO’s The Righteous Gemstones. The Righteous Gemstones fans tuning in for the Season 4 premiere may be doing a double take or checking the menu to make sure they’ve got the right show as Danny McBride’s HBO televangelist comedy kicked off its

I sent him the script and he called me back pretty quickly,” McBride tells PEOPLE before explaining what happened nextBradley Cooper may have needed just a little nudge to sign on to appear in the fourth and final season of The Righteous Gemstones.

Bradley Cooper had a surprise guest starring role in the Season 4 premiere of "The Righteous Gemstones" on Sunday, setting the tone for the final season of HBO's hit comedy.