How can I use "behind the scenes"?

Native speaker’s answer
Rebecca
"Behind the scenes" is an expression meaning secretly, privately, or out of sight. When the speaker says "there was definitely something going on behind the scenes," he means to say that there was something going on secretly, in a suspicious way. Ex: The actress was known for having a nice and friendly personality. But you never knew if she was different behind the scenes. Ex: The politician was campaigning for more money behind the scenes.