Paul Corupe’s review published on Letterboxd :
Jon Voight goes undercover as a former SS officer and hunts Nazi survivors in this tense and often beautifully shot '70s thriller. It's a little on the methodical side, but buoyed by great performances by Voight (probably his last really good one) and Maximilian Schell, plus there's a tense climax that brings in a nice twist to make it all worthwhile. The realistic concentration camp sequence and scenes of old party Nazi loyalty, such as the German beer hall meeting, still arouse disgust and bring home just what Voight's investigative reporter character is trying to accomplish. Those that criticize the film's curious musical score--Perry Como's accordion-laced "Christmas Dream" is the theme--should pay closer attention to its dark lyrics.