Internationally, she is probably best known for her role of Sonja Modig in The Girl Who Played with Fire and The Girl Who Kicked the Hornets' Nest, film adaptations of the Millennium series by Stieg Larsson.
Lorentzon was born in Tumba, Stockholm County, Sweden, to Finnish parents.
In her youth, Lorentzon worked as an engineer in the Ericsson, Inc., a cleaner and a teacher before entering the Swedish National Academy of Mime and Acting in 1994.
[1] In 2010, Lorentzon debuted as a screenwriter with her monologue play Grandmother's Dark Eyes (Swedish: Mormors mörka ögon), in which she played all three characters — herself, her mother and her grandmother.
In December 2010, Grandmother's Dark Eyes was broadcast on the STV.