Thud!
The Battle of Koom Valley the defining moment in Dwarf/Troll relations on the Discworld, a flat word that sits atop a giant turtle. Dwarves and Trolls both repeat the refrain “remember Koom Valley” as a reason for their hostility to the other. But... nobody actually knows exactly what happened at Koom Valley. This is where Ankh-Morpork Watch Commander Sam Vimes steps in. It’s a week from the anniversary of the battle, tensions between dwarf and troll are running higher than ever, and a firebrand dwarf preacher just got himself killed. In getting to the heart of the murder, Vimes uncovers a conspiracy at least as old as Koom Valley. As usual, Pratchett is both hilarious and gripping as this adventure twists and turns.