"Chicago P.D." may still be on its prolonged hiatus between Seasons 10 and 11, but some big news recently broke about what's on the way. Tracy Spiridakos, who has been playing Detective Hailey Upton since the end of Season 4, is set to leave the hit NBC drama. While it'll be hard to blame the character if she decides to leave Intelligence after everything she's gone through, fans have to wait to find out any details. We decided that it was time to rewatch the very first big Upton episode of "P.D.," and we have a number of thoughts that really amount to how much we're going to miss the actress.