Tracy Spiridakos’ run as one of the CPD’s most memorable detectives came to end in the Season 11 finale, but why did Hailey Upton leave Chicago P.D. and how was the character written off?

But why is Hailey Upton leaving Chicago P.D. and how will Spiridakos' character be written off? We have all the details below. NBC's hit police procedural follows the personal and professional ...