After the break, stepdad is still dead and lying there with no one even bothering to put a sheet over his face so his loved ones don't have to watch him decompose. House yells at Broda to let him out of the room, but Broda says he can't do that and House will just have to hope he wasn't exposed before he put the suit on. Oh, and that the suit's air supply doesn't run out soon, because even though they can give House another canister of air, he'll be exposed to the virus again when he swaps them out. Why can't they just put House in another isolation room? He's wearing the suit, so if they decontaminate the outside of it like they do to the CDC people who come and go, he can just walk out to another isolation room, right? Oh, but it turns out that PPTH's nearest isolation room is on the fifth floor and no one wants to deal with that, so he'll just have to stay in the dead guy's room.
The Cottages are in the meeting room. Of course, Martha wants to keep assuming it's not smallpox so they can keep working on the case, but everyone else doesn't see the point. Martha needs a friend right now, or at least some companionship and a sympathetic ear. So she pays for Greete to keep her company. And also translate some more logs in the hopes that there will be another clue in there. Greete reads that the captain's cat seems "distant" and "preoccupied," which Chase and Taub don't think is important since it's a cat and cats can't get smallpox anyway. Greete reads about that night's dinner, and is happy to report that the crew broke out a new barrel of wine. Martha suddenly asks Greete for more details on the cat, saying that the captain would only have brought him on board for a purpose, most likely to catch and kill disease-spreading mice and keep the crew safe. Greete is very sad to report that the cat died. Martha has a hunch and asks if the cat lost its fur before it died. Greete says it did. Martha says that cats can't catch smallpox but they can get rickettsial pox from the carrier mites on the mice they hunt. So both the cat and the slaves had rickettsial pox, which the crew didn't get because the cat did its job and kept the mice away except in the cargo hold, where the cat apparently wasn't allowed. The good news about all of this is that rickettsial pox is treatable. The bad news is that the stepdad died from a treatable disease.
Of course, Broda won't let anyone in to Julie's room to give her the necessary antibiotics that could save her because if they're wrong, it'll just make her that much worse. Martha says they can prove she's right if they examine the stepdad's body for tell-tale little black marks called eschars, which you don't get with smallpox. Broda insists that he would have seen them before, but Taub points out that Broda hasn't exactly gotten that close to the stepdad. As for the random CDC extras in the background, they're about to suit up and bleach the stepdad's body so they can remove it from the isolation room and reduce House's chances of being infected. But if they do that, Martha says, any evidence of rickettsial pox will be erased. Broda doesn't care.