The grunt with the camera phone attracted Six's attention. He turned his head to give his most menacing glare at the man.

"I'd suggest putting that away," he said with glacial calm that promised nothing good for the man's health should he refuse to do so. "And that all of you find something better to do. Is that clear?"

Without waiting for a response, he turned his full attention back to Knight. He frowned deeply. "Knight."

He put all of his confusion and frustration into saying his partner's name, getting across that he'd definitely noticed the change in behavior and wondered what he'd done to cause it.