This chapter examines the notion of paratext while dealing with the galaxy of heterogeneous material that constitutes The Girl with the Dragon Tattoos world. It offers an explanation of the role of paratexts in terms of flexibility, fluidity, and complexity. The Genettian notion of paratext be stretched, according to Jonathan Gray's reading, to include official paratexts, such as DVD covers and bonus material, trailers, and posters, as well as an alternate reality game, and grassroots paratexts, such as web parodies, homages, and fan art. The Millennium Trilogy, written by Stieg Larsson, was published between 2005 and 2008, quickly becoming a global success. The Girl with the Dragon Tattoo is generally seen by its critics and viewers as an edgy, hybrid product of popular culture that gives rise to polemics concerning feminism, the violence depicted, and the ambiguous body and sexuality of its protagonist.