Kate Warner 2

Kate Warner was one of the focal points of the 2nd season. I always thought she was an awkward character who would unnecessarily create trouble on the show. The second season ended with her and Jack developing some sort of relationship, and when the 3rd season returned, she was not in the picture. Her only appearance that season was a cryptic phone call between her and Jack that insinuated that they had just recently ended their relationship. Kate Warner is just another example of a character who is a major player for one aspect of the show, and then just abruptly has their role cut.