This episode introduces the character of Colin Sweeney, played by Dylan Baker. He appears in eight episodes in total.
During the scene in which Kalinda opens a case showing Diane and the others in the conference a collection of guns that were purchased within two miles of their office, Diane is given a gun to hold. Although Diane is timid around guns, showing a lack of experience with them, she still holds the gun properly; more specifically, instead of holding the gun with her finger through the trigger guard like most people do, she has her index finger pointed along the side, just above the trigger guard, which is the proper way to hold a firearm. One must never put their finger through the trigger guard unless they intend to actually fire the weapon. This could indicate that Diane has more experience and comfort about firearms than she lets on, or an error by the director wherein the actress playing Diane, Christine Baranski is subconsciously employing her own training and firearm safety.
This episode introduces the character of Nancy Crozier, played by Mamie Gummer. She appears in eight episodes in total.