So when Nader hires Razieh, a deeply religious, workingclass woman to care for his father who has advanced Alzheimer's, it sets in motion a rather unexpected whodunit of sorts.
Streep, who has been nominated for a Best Actress award at this year's Academy Awards for her role, stars as fiercely caustic nun, Sister Aloysius, the iron-gloved principal of a religious school in a workingclass New York neighborhood in the 1960s.