Sometimes they looked curiously out at the customers, the human intruders in their make-believe world.

The watchman was still not sure that he had actually seen a human intruder.

The eyes snap open and we are now aware that this "toy" is in fact a human intruder.

They ignored the human intruders, who in turn gave the drones plenty of room.

Probably someone had spooked a brownbuck and mistaken it for a human intruder.

He saw six animals at the edge of the clearing, dark black shapes against the green, watching the human intruders.

It was best if they thought she was just a simple human intruder stealing things.

Then she looked up, not allowing herself to show surprise at finding a human intruder.

Her spies were thus always watching for human intruders.

The thing that watched in the darkness was not in the same plane of the cosmos as the human intruders.