Behind-the-scenes and Cloak-and-dagger

Behind-the-scenes adjective - Not known or meant to be known by the general populace.

Cloak-and-dagger and behind-the-scenes are semantically related. In some cases you can use "Cloak-and-dagger" instead an adjective phrase "Behind-the-scenes".

Cloak-and-dagger adjective - Conducted with or marked by hidden aims or methods.

Behind-the-scenes and cloak-and-dagger are semantically related. Sometimes you can use "Behind-the-scenes" instead an adjective phrase "Cloak-and-dagger".