Although its initial publications were primarily in the horror and fantasy genres, over time Vertigo published works dealing with crime, social commentary, speculative fiction, biography, and other genres. Vertigo also adopted works previously published by DC under other imprints, such as "V for Vendetta" and "Transmetropolitan". The imprint pioneered in North America the publishing model in which monthly series sold through comic book shops are periodically collected into editions which are kept in print for bookstore sale. As DC's most popular and enduring imprint, several Vertigo series won the comics industry's Eisner Award, including for "best continuing series", and were adapted to film and television.