The Rose Garden (1990)

Decades after the Holocaust, survivor Aaron Reichenbach (Maximilian Schell) returns to Germany and attacks ex-Nazi officer Arnold Krenn (Kurt Hübner) in a Frankfurt airport. When Arnold files assault charges, a public defender, Gabriele Schlüter-Freund (Liv Ullmann), represents Aaron, expecting a straightforward case. But when Gabriele discovers that Aaron is one of many victims of cruel medical experiments in concentration camps, she resolves to seek justice.