A series of murders in Germany in the early 2000s led to a trial that lasted 438 days. Members of a neo-Nazi cell from a group called the National Socialist Underground were eventually convicted of the crimes. But the investigation and trial took a very long time, and many questions were left unanswered. Stephanie Wolf reports from Weimar on a new play that recreates the trial in a 17-day performance, and attempts to address some of the questions.