Sir Terry Pratchett is a publishing phenomenon. Among his many prizes and citations are the WORLD FANTASY LIFE ACHIEVEMENT AWARD, the CARNEGIE MEDAL, the BSFA AWARD, eight honorary doctorates and, of course, a knighthood. In 2012, he won a BAFTA for his documentary on the subject of assisted suicide, 'Terry Pratchett: Choosing to Die'. He is the author of 50 bestselling books but is best known for the globally renowned Discworld series. The first Discworld novel, THE COLOUR OF MAGIC, was published in 1983, and the series is still going strong almost three decades later. Four Discworld novels - HOGFATHER, GOING POSTAL, THE COLOUR OF MAGIC and THE LIGHT FANTASTIC - have been adapted for television, with more to follow. His books have sold approximately 75 million copies worldwide (but who's counting?), and been translated into 37 languages. Terry Pratchett lives near Salisbury in Wiltshire.

THE SHOW MUST GO ON, AS MURDER, MUSIC AND MAYHEM RUN RIOT IN THE NIGHT...

The Opera House, Ankh-Morpork... A huge, rambling building, where innocent young sopranos are lured to their destiny by a strangely familiar evil mastermind in a hideously deformed evening dress...

At least, he hopes so. But Granny Weatherwax, Discworld's most famous witch, is in the audience. And she doesn't hold with that sort of thing.

So there's going to be trouble (but nevertheless a good evenin's entertainment with murders you can really hum...)