Director Ursula Meier and actor Kacey Mottet Klein have been working on three feature films and a short ary since they first met in the film Home in 2008. Diary of My Mind is a film with the special relationship between the two who have grown together, has been deeply engraved in the narrative. Benjamin (Kasey Motet Kline) kills his parents with a pistol found in his father’s closet. Just before the murder, Benjamin sends a manuscript of the crime journal, which he has written for a few days, to the French teacher, Esther (Fanny Ardant), by mail. Esther encouraged her students to face their inner darkness and share their diary with other students. This film deals with the dilemma appearing when the artistic act facing the inner dark desire results in the execution of a crime. The dangerous relationship between Benjamin and Esther after the incident is to evoke the relat ionship between director Ursula and actor Kacey. The actor who has to pull out the darkness inside the mind to play the juvenile offender, and the director’s position to encourage the actor not to fall far into his character, are dissolved in the structure of the story and the psychological trajectory of characters. (KIM So-hee)