The Judgement 1997 on netflix

The Jewish antiques dealer Siegfried Rabinovicz is on his way from New York to Hamburg where he is about to testify as the principal witness in a murder case. During a stop-over, an airport hostess talks him into giving up his seat on the connecting flight to another passenger. While Rabinovicz is waiting in the VIP lounge, he gets into a conversation with a stranger who is remarkably well informed about the murder Rabinovicz is going to testify about.