James McAvoy has recently been getting in touch with his Scottish roots onstage in Macbeth, but he's gone full Glaswegian* onscreen in Filth, as the violent, drink-addled, drug-addicted, thoroughly reprehensible Bruce Robertson, the protagonist of Irvine Welsh's story. And you can see just how far he's gone to the bad in this trailer, which is not safe for work so we've put it at the bottom of the page in case your boss looks over your shoulder.
The plot sees McAvoy's corrupt, bigoted cop up for promotion, and determined to do everything possible (which in his case is quite a lot) to block the path of rival Ray Lennox (Jamie Bell) and his other colleagues. That's when he can spare time from his busy drinking / screwing / drug-snorting schedule, of course.
The film also stars Eddie Marsan, Jim Broadbent, Joanne Froggatt, Shirley Henderson, Kate Dickie and Imogen Poots, and is directed and adapted by Jon S. Baird. It's due to hit screens in September, so there's still time to brace yourselves for what promises to be an swearfest of epic proportions.
*Actually from Edinburgh in the book, but this trailer feels more Begbie's-Glasgow to us. Apologies to the law-abiding citizens of that city.