Chicago PD Season 12 airs Wednesdays at 10/9c on NBC. This article was originally published on hiddenremote.com as Kiana Cook's backstory was explained in Chicago PD (Here's what we know).

Chicago PD retuns with a fascinating case that has Kim trying to solve a case at her nightly diner. We tease what's next!

One thing I can say about Chicago PD Season 12 Episode 15 is that it ... As frustrating as it was for her to bite Kiana’s head off at the scene, it’s also one of those things where you ...