Elgin is an alien

Guys!! In the most recent episode, Sarah said "something" took Fatima, but we know Elgin is a HUMAN so why didn't they say "somebody"?

My theory is that Elgin is actually an alien and that's why they said something. He's also pretty weird so it makes sense, right? Other evidence includes the fact he fed Fatima his blood which she drank happily. In my experience, human blood tastes very icky even if you try to drink a lot of it and people called the cops on me when I offered my very drinkable blood to them.

Anyways what do you guys think???