It was announced this week that Tracy Spiridakos (Revolution and MacGyver) will be coming to Chicago PD in a multi-episode arc.
Spiridakos will be playing Det. Hailey Upton, a member of the robbery-homicide unit. "Always clocking in overtime, she got her detective shield meritoriously on the heels of an undercover assignment that is still shrouded in secrecy," according to the official character description, "and as a result has had to prove herself tot hose who thought she didn't earn the detective promotion." She'll clash with Voight at first, but he'll eventually come to want her in Intelligence.
You can expect to see Spiridakos' first appearance in episode 21, which is to air in early May.
You can catch Chicago PD Wednesday nights at 10/9c on NBC.