In the One Chicago universe, the characters and plot lines on all four shows -- Chicago Fire, Chicago P.D., Chicago Medand Chicago Justice -- are all intertwined. But in real life, how well do the stars know what's going on on the other shows?
Turns out, not very well! During a recent set visit, TVGuide.com quizzed actors and actresses from all four shows on their knowledge about their fictional One Chicago counterparts. And the results were, in a word, dismal. Hilariously dismal.
However, there was one exception! Chicago Fire's Kara Killmer is a self-proclaimed franchise fanatic.
"I'm embarrassed, but I'm also very proud," Killmer said, after nailing question after question about Med and P.D.