Question: what is the saddest black mirror episode?
Answer: U.S.S. Callister. ...  White Bear. Season 2, episode 2. ...  Metalhead. Season 4, episode 5. ...  Crocodile. Season 4, episode 3. ...  Arkangel. Season 4, episode 2. ...  Smithereens. Season 5, episode 2. ...  Black Museum. Season 4, episode 6. ...  White Christmas. Season 2, episode 4.