BBC Week continues with a mystery thriller written by Ruth Rendell under the pseudonym Barbara Vines. Viewers with access to STAR have been enjoying Ruth Rendell's Inspector Wexford mysteries for some time, though this is the first of her Barbara Vines novels to be filmed. A Fatal Inversion (Pearl, 9.45pm) starts in 1979 when callow youth Adam Verne-Smith (Douglas Hodge) inherits a mansion, and decides to hide out there for an idyllic, parent-free summer with his overbearing friend Rufus (Geremy Northam). Gradually they're joined by the seriously weird Zozie, then earth mother Vivien and shy Shiva, and all fall into a self-indulgent, communal lifestyle, cut-off from the rest of the world. But as the long hot summer continues, the idyll becomes a hell, and events veer out of control a la Lord of the Flies. They leave vowing never to meet again, but 12 years on, two bodies are found buried in the grounds and the police open up investigations. A Fatal Inversion is slow to get going - and rather depressing - but tomorrow's denouement is worth awaiting. SET in that Hollywood catch-all time, ''the near future'', Alien Nation (World, 9.30pm, original running time, 94 mins) is about a race of aliens who crash into California and are grudgingly integrated into society. James Caan plays a world-weary cop who takes on one of them (Mandy Patinkin) as his partner so he can track down the alien who killed his former sidekick. It's a great idea, which doesn't quite come off, despite clever effects and a terrific performance from Caan. THE best hunters in the animal kingdom are the subject of Super Predators (World, 8.30pm), an American documentary with outstandingly dramatic footage. The only problem is that where there are hunters, there must be hunted, and watching an hour of carnivores killing and tearing up their prey becomes increasingly gut-wrenching. Educational though this is, think carefully about letting the kids watch it. THE Black Crowes - undoubtedly the best thing to come out of Atlanta in decades - will sing Jealous Again and the wondrous She Talks to Angels from their best-selling debut album Shake Your Moneymaker in the first half of MTV Unplugged (2am). The second half goes to rock band Tesla, who'll do Love Song and Signs. That's followed by MTV Rockumentary: Heavy Metal (2.30am), a ''metalmentary'' which looks back to the genre's roots in the 1960s and 1970s and pays tribute to the artists who helped shape it. Veteran bands featured include Led Zeppelin, the Kinks and Black Sabbath. TWO film directors whose work is being shown at the Hongkong International Film Festival are guests on Eye on Hongkong (Pearl, 7.35pm). Claude Sautet talks about his movie A Heart in Winter, while Ang Lee discusses The Wedding Banquet, which closes the festival. There's also a feature on the Rembrandt etchings currently on sale in Hongkong and Gloria Wu interviews the London band East 17.