“White Bear” opens with a disoriented woman waking up in a house with no memory of who she is or how she got there. Her name is Victoria Skillane (played by Lenora Crichlow), though she doesn't know it yet. Photographs of a young girl and a man surround her, but she doesn't recognize them. A strange symbol flickers on the television. She stumbles outside into a neighborhood that appears abandoned—except for the people standing silently in windows or filming her on their phones.