How can Colvin and Wysocki be sure Gibbons is dirty? Just how smooth of an operator is the Alderman?

And how can Caleb and Jarek operate on a special assignment without coming across as pariahs to the rest of the force?

All of these questions are asked on this Monday's installment of The Chicago Code, "Gillis, Chase and Baby Face," the best of this drama's first three episodes. They are also previewed/teased in the following quintet of clips. Sit back and enjoy...

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.