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Ian McKellen, renowned for his versatile acting career, co-starred alongside Brad Renfro in the 1998 psychological thriller "Apt Pupil." McKellen portrayed the character of Kurt Dussander, a retired Nazi officer living incognito in the United States. Renfro played Todd Bowden, a teenager who discovers Dussander's past and becomes increasingly fascinated with the horrors of the Holocaust. The film explores Themes of guilt, responsibility, and the dangers of unchecked power.