White Bear is another superb episode of Black Mirror, definitely one of the best of the early seasons. Lenora Crichlow is terrific as the main character, and her bizarre scenario is terrifically exciting and enthralling. The twist is huge, and delivered in such a way, that you lose all empathy for the 'victim.' it's a very visual episode, it looks incrediy stylish, the story is such, that it stays with you, it certainly gets you wondering.
One of the best. 9/10
One of the best. 9/10