Maria Kowalska is a Polish actress who graduated from the National Film, Television and Theatre School in Łódź. She made her screen debut in 2018 playing the leading role of Aleksandra Kostrzewa in the crime TV series called Under the Surface. Maria Kowalska is a Polish actress who graduated from the National Film, Television and Theatre School in Łódź. She made her screen debut in 2018 playing the leading role of Aleksandra Kostrzewa in the crime TV series called Under the Surface.