Special Guest Stars Toby Jones as David Pilcher / Dr. Jenkins Guest Stars Siobhan Fallon as Arlene Moran Christopher Meyer as Mario Emma Tremblay as Lucy Armstrong Michael Garza as Frank Armstrong Sarah Grey as Abigail Co Starring Rochelle Okoye as Female Abby / Margaret Donny Lucas as Victor / Tech Amitai Marmorstein as Oscar Tyronne L'Hirondelle as Whistling Man / Dale Kate Bateman as Nancy Tyson Bellusci as Ramsey Jaime Callica as Husband David Raynolds as Drake Darren Mann as Kyle Tina Georgieva as Meadow Jennifer-Juniper Angeli as Dale's Wife Sarah Boey as Dale's Daughter Anthony Shudra as Dale's Older Son Françoise Yip as Sharon Christian Michael Cooper as Dale's Younger Son Naika Toussaint as Wife Emily Schutz as Dana McKinney Alexa McKinnon as Flirty Student Marissa Miller as Riley Ford Corina Akeson as Emily Simms Derek Green as Nathanniel Simms Jason McKinnon as Hospital Official Lisa Bunting as Headmistress