Guest Stars Janel Moloney as Mary Jamison Scott Glenn as Kevin Garvey Sr. Marceline Hugot as Gladys Frank Harts as Officer Dennis Luckey Natalie Gold as Sam's Mother Wayne Duvall as Det. Louis Vitello Patrick Husted as Louis Patterson Mary Shultz as Marie Patterson Sebastian Arcelus as Doug Durst Jennifer Onvie as Kylie Anthony Cieslak as Jeremy Durst Ella Taylor as Erin Durst Scott William Winters as Michael Quincy Tyler Bernstine as Dr. Singley Vanessa Kai as Parent at School Briana Marin as The Woman Christopher Devlin as Charlie Patterson Adrian Matilla as Purchase Cop Hamilton Clancy as Geeky Science Teacher Ted Arcidi as Tow Truck Driver Jacqueline Knapp as Rough Woman
