Episode 615 - A young woman (Ann-Margaret) escapes from a juvenile detention center and hides out in what she thinks is a vacant home. It turns out the house belongs to a senatorial candidate (John Forsythe) who is just too lazy to pick up the newspapers while his wife is out of town. Forsythe helps her out of the goodness of his heart, but she turns around and tries to blackmail him. This is a really fantastic episode with lots of top shelf riffs. The full movie is available in MST3k volume XXV or here on YouTube.
Here's a sampler: