Guest Stars Zahn McClarnon as Officer Mathias Barry Sloane as Zachary Heflin Hank Cheyne as Sam Poteet Tamara Duarte as Mandy Ally Walker as Dr. Donna Monaghan Scott Michael Campbell as Dr. Weston Callum Keith Rennie as Walker Browning Josh Cooke as Eamonn O'Neill Stephen Louis Grush as Monte Ford Julia Jones as Gabriella Langton Nick Tarabay as Tyler Malone Lew Temple as Archer Loftus Stefany Mathias as Linda Langton Alicia Urizar as Laila Bixby