Mary returns to WITSEC from maternity leave to find a new set of office dynamics. She must protect a witness who could take down one of the most powerful secret societies in the country.
Grant Chandler, a public advocacy lawyer, tries a case against the Army that ends up pitting Claudia Joy and Michael against each other in a courtroom.
Everyone on post is on high alert as Fort Marshall is on its 99th day without a fatality. Joan finally goes to the doctor and learns what is causing her symptoms.