Let such madmen act behind their conventional masks of sanity.
However, by 644, the heads of the Soga clan were no longer satisfied to act behind the scenes.
We still act behind the scenes, protecting, preserving, preparing for the Day.
They usually acted behind the scenes but occasionally helped the Gorengers with some of their missions.
For the next four years, they acted behind enemy lines.
Holmes continued to act behind the scenes editing and supervising details.
The Brain seems to do very little during the series, and acts behind the scenes coordinating the villain attacks.
Thus, many times they acted behind the scenes, although their leadership was known to their contemporaries.
An organisation which plays with the lives of innocent people by acting behind their backs.
You are assuming an intelligent force acting behind these events.