The world of Chicago is expanding with the latest installment in the Dick Wolf franchise:Chicago Justice.

They get ambushed essentially, executive producer Matt Olmstead tells EW.

Making matters more complicated is the fact that Roman and Burgess arent just partners.

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Credit: Matt Dinerstein/NBC

Was her head on straight when she was pursuing the guy?

Does it look bad if they find out and she hasnt told them and gotten in front of it?

True to form for the Wolf universe, the story is based on real-world events.

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Matt Dinerstein/NBC

It was Dicks idea, and he wanted to do this story, Olmstead says.

And thats basically a version of our jumping-off point in this story.

Chicago P.D.airs Wednesdays at 10 p.m.