I sequestrati di Altona

... from director Vittorio De Sica. German shipping magnate Fredric March learns that he has six months left to live. He summons his son Robert Wagner and daughter-in-law Sophia Loren to his palatial estate in order to set plans for his passing. Loren, who resents Germany's Nazi past and March's role in it, learns that March's older son (Maximilian Schell), believed long dead, has lived in seclusion since the end of the war, so she sets out to learn why he is hidden away. Also with Francoise Prevost and Gabriele Tinti.

This must have been a major European release at the time, as De Sica was one of the most respected directors, and Loren and Schell had just won the lead acting Oscars. It's heavy stuff, with the examination of German culpability for Nazi atrocities a thorny subject. The version I watched was in Italian with subtitles, so it was odd seeing March, Schell and Wagner dubbed with others' voices.