[ Derek doesn't want to be the bearer of bad news, so he's glad when Ben admits on the post that he doesn't think Klaus is here anymore. Derek can confirm it. The smell of the flamboyant Hargreeves is gone as though he'd never been there at all. It's actually really disconcerting. ]

I'm sorry, Ben. This is Derek. I'm still here. Maybe it just means he was terminated from whatever sick experiment this house must be and they sent him back home.