Former Postmaster General Moist von Lipwig finds himself working at the Royal Mint of Ankh-Morpork, where he makes money and enemies while finding out who is stealing from the mint.

Inside the walls of the Dead Letters Depot, letter detectives work to solve mysteries. They study missing zip codes, illegible handwriting, rain-smudged ink, lost address labels, torn packages, forgotten street names--all the many twists of fate behind missed birthdays, broken hearts, unheard confessions, pointless accusations, unpaid bills, unanswered prayers. Their mission is to unite lost mail with its intended recipients. But when letters arrive...

A tour of the busy work that takes place at post offices is depicted through the journey of a lost package that receives a little help reaching its destination, proving that distance cannot keep loved ones apart.

The unsuspicious death of fast-living Roger O'Bannon at the Wrecker's Ball turns into a murder mystery when a second body is discovered, a situation that prompts "Harry" Haristeen and her feline sleuth, Mrs. Murphy, to find a connection between the two victims.