'They say that a little knowledge is a dangerous thing, but it is not one half so bad as a lot of ignorance.'

Everybody knows there's no such thing as a female wizard. So when the wizard Drum Billet accidentally passes on his staff of power to an eighth daughter of an eighth son, a girl called Eskarina (Esk, for short), the misogynistic world of wizardry wants nothing to do with her.

Thankfully Granny Weatherwax, the Discworld's most famous witch, has plenty of experience igno ...