“25 years ago the world’s greatest superhero vanished,” in response to the poster for Prime Video’s “Samaritan.” The narration by Sam (Javon ‘Wanna’ Walton) that opens the movie offers us the Cliffs Notes model of how he did. Samaritan had a nemesis, a twin brother named—you guessed it—Nemesis. As youngsters “they were freakishly strong,” Sam…
