Spin City Season 4 Episode 13 A Tale of Two Sisters ( Air Date 2000-01-12 ) Genre Comedy, Drama category. Overview "The mayor struggles to find a date for a mayor's conference. Mike goes out with Caitlin's sister, making Caitlin jealous. Stuart tries to join Nikki, James and Janelle's art class to see nude women. Paul is upset that Carter makes more money than him.".