Special Guest Stars Toby Jones as David Pilcher / Dr. Jenkins Shannyn Sossamon as Theresa Burke Charlie Tahan as Ben Burke Guest Stars Siobhan Fallon as Arlene Moran Christopher Meyer as Mario Emma Tremblay as Lucy Armstrong Michael Garza as Frank Armstrong Co Starring Donny Lucas as Victor / Tech Janet Glassford as Gina / Surveillance Tech Amitai Marmorstein as Oscar Tyronne L'Hirondelle as Whistling Man / Dale RJ Fetherstonhaugh as Sean (Graduate # 1) Christian Tessier as Bartender Kate Bateman as Nancy Tyson Bellusci as Ramsey David Raynolds as Drake Kavandeep Hayre as Field Medic Alexa Barajas as Pregnant Teen Student #2 Dylan Sloane as Harvester Serge Jaswal as Harvester #2 Kishan Moore as Teen Mother Sierra Sidwell as Pregnant Teen Student Joshua Morettin as Male Teen Student