Puzzle solved!

I have never seen the film Jigsaw, which features a Marlene Dietrich cameo in a supper club called The Blue Angel. Now apparently in the public domain, Jigsaw has been uploaded to YouTube and sites such as Internet Archive. I am thankful I waited to watch. As you will see in the above video, Dietrich doesn't appear in this flick until about 28:05, leaving a starlet's show with a disapproving nod and with utter disregard for gawking onlookers who recognize her. Would this be an example of art imitating life?