The One Chicago universe—comprising Chicago P.D., Chicago Fire, and Chicago Med—has long been a staple for fans of high-stakes drama and complex character arcs. Yet, over the years, viewers have been left reeling as beloved characters made unexpected exits, leaving behind unanswered questions and emotional voids.
Introduced in Season 4 and promoted to series regular in Season 5, Tracy Spiridakos' portrayal of Detective Hailey Upton quickly became a fan favorite.
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