Although his books seem particularly difficult to adapt, several filmmakers have done fine work turning Brett Easton Ellis' stuff into feature films. As a matter of fact, I'd go as far as to say that ALL of the films based on Ellis' books are actually better than the source material. Certainly American Psycho, and maybe to a slightly lesser degree on Less Than Zero and The Rules of Attraction. But with the arrival of Gregor Jordan's nearly unwatchable The Informers, Ellis finally got the adaptation we haven't been waiting for.
Little more than a jumbled mass of unrelated subplots, The Informers is about a bunch of rich, spoiled, disaffected, hedonistic, obnoxious, ungrateful and gorgeous young people who simply do whatever they want and abuse / dismiss / mock anyone who gives them a second glance. Why anyone would want to spend 94 minutes with a crew this venal and hateful is anyone's guess, but combine their collective unpleasantness with a screenplay that "adapts" little and goes nowhere fast, and you're looking at a movie that's an absolute chore to sit through.