You are no use to me if you don't know a way out.

And if they can get in, Kirk thought, they'll know the way out.

"Then maybe you can tell us what we want to know out here?"

Now I know the way in and the way out.

I believe you know the way out, since you've already searched my house.

He thought I really knew the way out, and so he was making for it.

It was his own building, Foreman had said, and he knew a way out.

"I knew humans out on the plains, and many of them were good people."

Going for the familiar, Jenny thought, heading to the only piece of home he knows out here.

It followed, therefore, that the person in question must have known a way out.