Alicia and Frank Prady square off in a crucial debate in the race for State’s Attorney as Peter and the city of Chicago prepare for a potential riot. Chris Matthews and Rachael Harris guest star.
Morland offers to pose as one of his son's irregular consultants in order to help Sherlock and Joan solve a case.
Joan and Evan compete against each other in Fort Marshall's war games; Haneen's surgery is a success; Frank and Denise continue to work on their relationship.
Claudia Joy and Denise serve as companions for the widower of a former senator; Roland finds a way to comfort Joan about her upcoming deployment; Roxy tries to impress the principal at a private school.
A computer sting uncovers the possible mole in the CIA arms smuggling ring; Henry worries that the doomsday cult is drugging his embedded operative; Elizabeth and her staff come up with a plan for dealing with black rhino poaching in Namibia.