I've just watched it back.
Those Terminus people weren't doing anything scientific at all, they were only preparing more maps to notify people of the Terminus.
ETA - Eh, not sure I read that here now but I thought some one mentioned that they might be good and working on a cure.
Also, as Gareth was ordering them into the shipping container, he said to Rick, "Don't make me kill him now" about Carl, suggesting that killing him is definitely on the cards.
I don't think Beth is gone either, I'd say she'll be back at some point.
I think that house was a set up.
It was maintained too well, and they commented on the food having no dust on it.
Also the dog was a way to get them to let down their guard and open the door a second time.
I reckon they were being watched as soon as they got there.
Maybe she's wanted for breeding?
I'm not sure what the empty powdered milk packets are about.
Was Judith drinking powdered milk? Or are the prisoners fed powdered milk for sustenance until they're to be killed and eaten themselves?
Can't believe we have to wait so long.