Thud!

Seventh book of the original and best CITY WATCH series, now reinterpreted in BBC''s The Watch

''Imaginative, witty and consistent'' SFX

The Discworld is very much like our own - if our own were to consist of a flat planet balanced on the back of four elephants which stand on the back of a giant turtle, that is . . .

''Beating people up in little rooms . . . he knew where that led. And if you did it for a good reason, you''d do it for a bad one. You couldn''t say ''we''re the good guys'' and do bad-guy things.''

Koom Valley, the ancient battle where the trolls ambushed the dwarfs, or the dwarfs ambushed the trolls, was a long time ago.

But if he doesn''t solve the murder of just one dwarf, Commander Sam Vimes of Ankh-Morpork City Watch is going to see it fought again, right outside his office.

With his beloved Watch crumbling around him and war-drums sounding, he must unravel e