I love it
The look on the real waitresses face, as she's helpless tied up in her cute bra and panties, is priceless. And the infiltrator resting her foot on the real waitress.
And the completely clueless cop, who doesn't even know she's chatting to a fake waitress. Nor can she hear the muffled cries of the real one.
The infiltrator should give the waitress a little kick to the face just to keep her quiet.