The Girl Who Played With Fire offers the best and the worst of sex. Most of the novel's good guys have unconventional sex lives which seem meant to challenge how we feel about things like same-sex relationships, open marriages, multiple sexual partners, and consensual sexual acts that include bondage and other role playing games. These unconventional but consensual sexual relationships stand out in sharp contrast to all the rapes and other violent sexual acts the novel deals with. Fire's plot centers on the sex trade between Eastern Europe and Sweden. It's concerned with the plight of young women who are sold and traded for sex, and it also exposes how these women are ignored by the legal system.