Out in the car, they look at the envelope, which is addressed to "J.W.," and wonder if that stands for John Winchester. Sure. It also stands for Juwannastop Wankingaround? Open it already! Somebody else has gotten the memo that these two are acting the fools, and so suddenly knocks on the driver's side window, causing Dean to jump slightly in his seat. It's Jeffrey Dean Morgan! As much as they try to act like they are, nobody is surprised. Daddy gives the boys a wide, cheery grin, which seems kind of sadistic given the way they last parted and given the fact that he is the worst father of all time ever the end. He gets in the back seat and swings into his normal overly-serious mode. Sheesh, this guy. He's heard about Elkins, and he saw them out at Elkins's place the other night. Sam asks why he didn't come in and join the bloody party, and he responds that he was making sure nothing followed them there: "Nice job covering your tracks, by the way." Cram it, Crocodile Dundee. Dean, who turns into nearly as simpering of an idiot as his little brother when his father is around, responds that they learned from the best.
Daddy then goes on to explain that he knew Elkins but they had a falling-out (when? Who knows, who cares?), and then asks to see the envelope they got out of the p.o. box. He opens the letter and reads aloud, "'If you're reading this, I'm already dead,'" and then starts muttering about how the son of a bitch "had it the whole time." I'm barely able to keep my eyes open whenever Morgan opens his mouth. Daddy demands to know whether the boys saw an antique gun while they were in Elkins's cabin. Dean sort of stutters out that he saw an old case, but it was empty. Daddy then gets out of the car, declares they have to "find them," and comes back around to lean in the driver's side window. Somebody's six-year-old kid is clearly both working the camera and directing this scene, as we get the always-sophisticated camera-jerk-to-the-face-of-whoever's-talking management of this conversation. Daddy's face: "We gotta find this gun." Sam's face: "The gun? Why?" Daddy's face: "Because it's important." Sam's face: "Dad, we don't even know what these things are yet." Daddy's face: "Vampires." Dean's face: "[yoip!] I thought there was no such thing!" Sam's face: "You never mentioned them!" Daddy's face: "I thought they were extinct. I was wrong." Got whiplash yet?