At first glance, Rage, the new film by Sally Potter which premieres in competition at the Berlin film festival next week, is a familiar beast. A murder-mystery set in the fashion houses of Manhattan, it boasts a starry, Brit-heavy ensemble, with Jude Law in drag to play mysterious supermodel Minx and real-life model Lily Cole as vulnerable starlet Lettuce Leaf.Your mind would be forgiven for wandering back to Gosford Park, Robert Altman's virtuoso country house whodunnit, or even The Cat's Meow, a lavishly befrocked tale of slaughter set aboard a luxury yacht and featuring Eddie Izzard (also present and correct in Rage) as Charlie Chaplin.But Rage's real target, it turns out, is not the rag trade – though Potter, speaking on the phone from Paris, can't resist a little dig at "an industry that reduces people to things, that puts profits above all else".Instead, Rage is an examination of the power of the internet and the age of compulsive confession; a warning shot at an info-saturated environment which confers power on cyber-savvy youngsters, leaving adults hostages of their own ignorance, and their desire to bare their souls."What we see these days," she says, "is a lot of false confession.