Thud! Av Terry Pratchett

<p><b>Seventh </b><b>book of the original and best CITY WATCH series, now reinterpreted in BBC''s The Watch</b><br><br><b>''Imaginative, witty and consistent'' </b><i>SFX</i><br><br><b>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 . . . </b><br><br><i>''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.'' </i><br><br><b>Koom Valley</b>, the ancient battle where the trolls ambushed the dwarfs, or the dwarfs ambushed the trolls, was a long time ago.<br><br>But if he doesn''t solve the murder of just one dwarf, <b>Commander Sam Vimes </b>of <b>Ankh-Morpork City Watch</b> is going to see it fought again, right outside his office.<br><br>With his beloved Watch crumbling around him and war-drums sounding, he must unravel e