premise: It stood to reason that he 'd figured out where the camera was hidden , but it still caught Bruce by surprise . His hands stilled at the keyboard . Stretching in a feline motion , Joker tilted his head while keeping his eyes riveted to the spot he 'd guessed , exposing a length of neck and running his tongue over his lips . The message was very clear , though whether it was a challenge , invitation , or some mix between the two was unsure . What would happen if he had not located the camera that was hidden ?
hypothesis: He would have to hire an expert who could detect the camera for him