Guest Stars Michael Cerveris as September Ona Grauer as Dianna Sutter Michael Massee as Anson Carr Co Starring Jarod Joseph as FBI Agent Tim Debbie Timuss as Woman in Park Diana Pavlovska as Jane Hall Babak A. Motamed as Medical Examiner Jones Paul Andrich as Man in Park Devin Johnston as Andrew Sutter Moya O'Connell as Linda Greeley Russell Thomas as Waiter