Stabler and Benson tell Ray that he's under arrest for Seth Langdon's murder. "You don't have jack," says Ray. "Yeah, you're right, all we have are witnesses that put you at the building that night," says Benson. "Oh yeah -- and you left a little evidence in the victim's mouth." They haul Ray out to the parking lot where Munch and Cassidy have hauled out Cindy Stock Trash. "Don't worry, they got the wrong guy," Ray tells her. Stabler razzes Ray with the old we-know-you-did-it routine: "One month out and you're back to your old tricks." Benson: "You had a little trouble adjusting back to civilian sex, didn't you, Ray?" "He didn't have no trouble!" bawls Cindy. Ma'am, do you have a license for that stereotype? Cassidy and Munch put her in the car, presumably to check, while Benson and Stabler start asking Ray about Seth. Ray admits that he saw Seth in the building gym sometimes, "trying to pump up that puny body of his." "So what happened, did he hit on you? Or was it you -- you start to like them puny like that?" asks Benson. "Now that you mention it, he reminded me of a bitch I had in prison," says Ray. Benson: "You're pathetic." Ray: "What's wrong -- you jealous, sweetheart?" Stabler pulls Ray's arms behind his back and pins him to the ground. Oh yeah -- if this were Oz, Ray would be his bitch. Stabler growls at Ray: "Not 'sweetheart' -- Detective Benson, all right?" He and Benson pull Ray up and slam him around. You know he loves it.
Back at the station, Cap'n Cragen calls Stabler and Benson into the office. "We got real problems here. We got the full DNA report back." "And?" asks Stabler. "And it ain't Ray's," says Cragen. Twangety-twang! goes the old Dukes of Hazzard Incidental Banjo of Conflict.
Down at the lab, ME Not Rogers reminds Benson and Stabler that she ran the DNA match-up against the quickie tests -- you know, the kind you get at Walgreen's that just show a blue plus sign or a minus sign? Or something. ME Not Rogers says that the match came from the results of the mitochondrial, which only narrows things down to bloodline. "So while it's definitely not Ray, you are still looking for somebody from that family -- a father, a son --" "Or a brother," realizes Benson and the whole universe.