Unfolding in an isolated fishing village, Kai Stänicke ’s German drama “ Trial of Hein ” has a nebulous, nondescript period setting, but its concerns are entirely contemporary. We’re introduced to its uncanny backdrop through the eyes of protagonist Heinrich, or Hein (Paul Boche), a gaunt young man who returns by boat after 14 years away. However, no one in the village seems to recognize him — least of all his mother Mechthild (Irene Kleinschmidt), who suffers worsening dementia. To verify his