Special Guest Stars Melissa Leo as Nurse Pam Guest Stars Siobhan Fallon Hogan as Arlene Moran Christopher Meyer as Mario Emma Tremblay as Lucy Armstrong Michael Garza as Frank Armstrong Co Starring Tyronne L'Hirondelle as Whistling Man / Dale Kyla Matthews as Julie Jackson Julian LeBlanc as Lab Tech Emily Schutz as Dana McKinney Alexa McKinnon as Flirty Student Marissa Miller as Riley Ford Julian Grey as Young Jason (10) Dean Petriw as Young Jason (5) Grayson Maxwell Gurnsey as Soldier #2 Murat Kocaoglu as Soldier #1 Mia Fiona Kut as Nurse
