I must not forget either all those very important people, without whom none of us could operate, who work behind the scenes.

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I must not forget either all those very important people, without whom none of us could operate, who work behind the scenes. (*) in the dark (*) at the back (*) in the evenings (*) in the background

This is a companion discussion topic for the original entry at https://english.best/questions/23322,i-must-not-forget-either-all-those-very-important-people-without-whom-none-of-us-could-operate-who-work-ubehind-the-scenesu/