Thud!
The readers can download Thud! Audiobook for free via Audible Free Trial.
Summary
Commander Sam Vimes of the Ankh-Morpork City Watch will be damned if he lets anyone disturb his city's always tentative peace -- and that includes a rabble-rousing dwarf from the sticks who's been stirring up trouble on the eve of the anniversary of one of Discworld's most infamous historical events.