Watson joins Holmes. He's interested in her results! I like that a lot, actually. He is disappointed in her giving up and then he dismisses the entire thing from his mind to return to the matter at hand. He has a form from one of the victims. And it features two handwritings! Inichka Jones had to fill it out for the Ukrainian patient, meaning that this victim spoke Ukrainian and not English. And the Angel must have talked to her, because that's what he does. None of the doctors at the hospital speak Ukrainian, but, says Holmes, not all doctors stay doctors.
In the interrogation room: it's the janitor! He had blue and yellow rags on his cart. He admits that he used to be a doctor in the Ukraine, but now he's just a janitor. Holmes and Gregson lay out the victims. "We believe they were all murdered." The janitor admits that he remembers them. "When a patient is in pain, dying is not a tragedy," he says. Gregson says they had a warrant, so they searched his apartment and found a log of notes about precisely these nine patients. The janitor says he "freed them" after confirming for himself that they had no hope of recovery. Holmes asks about the one they found who was getting better, but the janitor doesn't understand: "Better? People do not get better from metastasized cardiac cancer." Holmes says she didn't have cancer, but the janitor insists they found a mass and she was dying. Also that Holmes is making up lies, just like the police in the Ukraine.
Outside the interrogation room, Gregson praises Holmes. Holmes is freaked out that the janitor is telling the truth about Samantha Cropsey's condition. He doesn't care that they've caught the Angel. There's more to do! And a good thing, too, because we're only 45 minutes into the show.
Holmes sits cross-legged in the brownstone, studying files. Watson proposes sushi for dinner, so Holmes lists diseases related to raw fish. He's trying to determine why their Angel got Samantha wrong. The door buzzes and it's Carrie. He calls her "Joanie's friend," which is weirdly disturbing. Then when it's clear they're not going to have a conversation, Holmes shouts for Watson and strides off. Carrie is here to tell Watson she was right and that the third test revealed that Morgan did indeed have endocarditis. Some anonymous person put the test request in Morgan's file. Watson admits nothing and says Carrie was lucky. And that she knows what it's like not to be lucky. Carrie says, "You were always a good friend, Joanie. But you were a better doctor." And she leaves.