"Surely you understand if you are unwilling to share even the data gleaned from putting us through torment without our consent, then you must be treated as any other captor looking for convenient victims. I have no reason other than your word to believe you are not yet another foreign force torturing my fellows and myself for your own profit and gain, or merely your entertainment."

The young researcher spreads his hands at his side, an almost helpless gesture. "As things stand, you have supplied no evidence that you are not such beings, and until provided anything to the contrary, I cannot in good conscience cooperate."

Which is ... terribly unfortunate, but as he can't even tell if these are actually people.. "I would very much like to, but I don't even have evidence you actually exist, and are not illusions conjured up by magic or drugs to make me believe otherwise."