I was led to believe that it was more of a magical realist take on historical fiction, but it isn't quite magic. Though I suppose you could say that an actual underground railroad is something fantastical. Cora goes from one terrible locale to different kinds of horrible places. And when she finally finds supposed-paradise, it is snatched away in a rather painful episode. There is a heavy emphasis on testimony, that the escaped slaves must provide a written account in order to board the train. It is as if to say that people need to know what happened here, history demands it, lest we forget it. Thuso Mbedu does a lot of heavy lifting as Cora, processing many complex emotions. And I think Joel Edgerton is actually extraordinary too as the slave catcher Ridgeway.
I found the 10 episodes to be the opposite of binge-able. Especially in the early episodes, many of the depicted brutalities keep you from clicking next. Hard to do any more than a couple at a time. It's a lot to take in. The end credits of each episode are played over modern music, whether Outkast, Marvin Gaye, Mahalia Jackson, Childish Gambino or Kendrick Lamar. It's surprising, immediately pulling the viewer out of the world, giving us a respite from the horrors of the episode. An orchestral arrangement of Clair de Lune plays over a sensitive show-stopping love scene. The use of music is brilliant. Jenkins and Britell have one of the best director-composer partnerships in the business.