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 Vanessa Kai as Parent at School Hamilton Clancy as Geeky Science Teacher Briana Marin as The Woman Adrian Matilla as Purchase Cop Quincy Tyler Bernstine as Dr. Singley Ted Arcidi as Tow Truck Driver Christopher Devlin as Charlie Patterson Jacqueline Knapp as Rough Woman
