Evil is a 2003 Swedish drama film which was released to cinemas in Sweden on 26 September 2003, directed by Mikael Håfström, based on Jan Guillou's semi-autobiographical novel of the same name from 1981, and starring Andreas Wilson, Henrik Lundström and Gustaf Skarsgård. The film is set in a private boarding school in the late-1950s with institutional violence as its theme.

Jan Oskar Sverre Lucien Henri Guillou is a French-Swedish author and journalist. Guillou's fame in Sweden was established during his time as an investigative journalist, most notably in 1973 when he and co-reporter Peter Bratt exposed a secret and illegal intelligence organization in Sweden, Informationsbyrån (IB). He is still active within journalism as a column writer for the Swedish evening tabloid Aftonbladet. Among his books are a series of spy fiction novels about a spy named Carl Hamilton, and a trilogy(+) of historical fiction novels about a Knight Templar, Arn Magnusson. He is the owner of one of the largest publishing companies in Sweden, Piratförlaget, together with his wife, publisher Ann-Marie Skarp, and Liza Marklund.