Karin Arrhenius

She wrote the script for The Girl, set in the summer of 1981 and following an unnamed 10-year-old girl left behind as the rest of her family travels to Africa to do charity work. Her partner Fredrik Edfeldt [sv] directed.^[4] The film received an average rating of 3.8 on the Swedish review aggregator site Kritiker, based on 25 critics' reviews.^[5] It was also nominated in four categories at the Guldbagge Awards, including Arrhenius' nomination for Best Screenplay.^[6] She was the screenwriter for In Your Veins; the film was based on a novel by Lotta Thell [sv] and premiered in 2009.^[7] Arrhenius and Edfeldt collaborated again for a second film, Faro [sv] (2013).^[8]

With Maren Louise Käehne, she adapted Kerstin Ekman's book into the 2023 crime drama series Blackwater.^[9] She and Edfeldt wrote and directed, respectively, Life on Seacrow Island [sv], which was released on 31 October 2025. The series was a remake of a 1964 series of the same name written by Astrid Lindgren.^[10] She adapted Karin Smirnoff's debut novel into My Brother, a four-episode miniseries, which premiered 26 December 2025 on SVT Play and the following day on SVT1. In a positive review for Dagens Nyheter, Fredrik Sahlin [sv] praised Arrhenius' writing, stating "she [did] complete justice to the original's stark, hard-boiled language" (gör hon förlagans karga, hårdkokta språk full rättvisa).^[11]

• Karin Arrhenius at IMDb
• Karin Arrhenius at the Swedish Film Database