Basically what Hayward said. The two who have been in the apartment the last few days haven't been Nelly or Bogdan; it was Efim and his girlfriend. For reasons unbeknownst to us, both Bog and Efim have casts on their arms. The brunette is Ef's highly sexual, energizer bunny of a girlfriend. They're done housesitting now though so we won't be seeing much of them I'm assuming, unless Efim somehow weaseled his way back into getting an apartment.