He settles into a quiet corner to examine the case he's been brought. He takes off his fedora while leaving his yarmulke in place. Inside the case is the ledger from the teaser. It's a bit singed around the edges, but otherwise intact. Judging by his stunned reaction and the swelling of ominous music, this is what he's been looking for. "Dear God," he says in Yiddish.
He rushes back to the librarian as best he can, begging him to protect the book. "This thing they put on me, he's too close," he says. "I can't take this ledger with me!" The librarian snittily replies that special reference books can't be taken, anyway. The book, he snits, will be perfectly safe in the library. Barney Miller smiles politely and says (again in Yiddish), "I hope they pay you good to keep that bug up your ass." The librarian blinks, uncomprehending, although perhaps he did recognize the word "tuchus" and extrapolated from there.
By the time Barney Miller leaves the library, night has fallen. He starts off in one direction, then perhaps sees the man waiting in the shadows for him and heads off the opposite way. He ends up in a bar called the Campus Pub, where he avails himself of the payphone. From outside, a man with delicate features and reddish blond hair watches him. Barney Miller leaves a message for someone: "Now, listen to me. I got no time left. I found it! When you follow me, you're gonna need this number." He reads something into the phone while we watch him from his stalker's point of view. When he hangs up the phone, there seems to be a calm resignation to him. He beckons to his stalker through the window. "Why so shy? Come in! You'll have a cup of coffee with your old enemy!" Three young women at a nearby table give him worried looks. Barney Miller's whole body begins to smoke. "You Nazi piece of rubbish!" he hurls at his stalker. "You Nazi pig!" His skin reddens and blisters. Fire consumes him from the inside out. Instead of screaming, he laughs and laughs. Satisfied, his stalker turns and walks away. Seems like a real lack of foresight on the Nazi's part to kill Barney before finding out if he had the book.
Two weeks have passed when we rejoin Sam at the secret hub. Dean also returns, having gone off to check on Kevin. Because why just call him when you can drive and drive and drive all the way to Garth's houseboat? There's a passing mention of Castiel and the fact that Dean hasn't been able to reach him, but that's not what the story is about this week so they move on. Besides, Sam has two weeks of exposition to pass along to Dean. He's been tracking down the group's network of hunters and various other groups. Most, he says, are dead or defunct. Then he hands Dean a file. "The Judah Initiative?" Dean asks. "European team. They were active during World War II," Sam explains. Dean glances through the file and at a horribly Photoshopped group picture. He realizes they were rabbis. I like how the file's contents say "For Official Use Only," like anyone who was in the secret society might think this was for public consumption. Anyway, Sam looked up all the Initiative's members and got a hit. The Rabbi Isaac Bass -- previously known as Barney Miller -- died at about the same time they were setting up digs at the hub. "According to eyewitnesses, he spontaneously combusted," Sam says. "So this is a case?" Dean asks, already knowing the answer. He sighs, "I just got back!" Think about that the next time you set off on a pointless road trip, doofus.