Even though viewers can expect a few laughs when Cas (Misha Collins) and Dean (Ackles) team up to take down a murderous angel in Tuesday’s episode, don’t expect everything to be like old times. The former angel still bears some resentment at Dean for kicking him out of the Men of Letters bunker a few episodes back. “First of all, Cas is pissed at Dean and rightfully so,” Collins says. “He’s feeling a bit jilted for having been thrown out on his butt.”

Dean is also harboring “a fair amount of guilt at sending [Cas] packing,” according to Ackles, but the actor explains he only did what was necessary to preserve the secret of Sam’s (Jared Padalecki) possession. “Obviously he’d much rather have Cas around,” Ackles says. “The family that Dean knows is very, very small and getting smaller.” And while Dean is forced to leave Sam at home with Kevin (Osric Chau) for this caper, Ackles says working this case with Cas is the first step in finding a way to reintegrate him into their lives.