Amazingly, former arch-swindler-turned-Postmaster General Moist von Lipwig has somehow managed to get the woefully inefficient Ankh-Morpork Post Office running like . . . well, not like a government office at all. Now the supreme despot Lord Vetinari is asking Moist if he'd like to make some real money. Vetinari wants Moist to resuscitate the venerable Royal Mint—so that perhaps it will no longer cost considerably more than a penny to make a penny.
Moist doesn't want the job. However, a request from Ankh-Morpork's current ruling tyrant isn't a "request" per se, more like a "once-in-a-lifetime-offer-you-can-certainly-refuse-if-you-feel-you've-lived-quite-long-enough." So Moist will just have to learn to deal with elderly Royal Bank chairman Topsy (née Turvy) Lavish and her two loaded crossbows, a face-lapping Mint manager, and a chief clerk who's probably a vampire. But he'll soon be making lethal enemies as well as money, especially if he can't figure out where all the gold has gone.
Reprieved confidence trickster Moist von Lipwig, who reorganized the Ankh-Morpork Post Office in 2004's Going Postal, turns his attention to the Royal Mint in this splendid Discworld adventure. It seems that the aristocratic families who run the mint are running it into the ground, and benevolent despot Lord Vetinari thinks Moist can do better. Despite his fondness for money, Moist doesn't want the job, but since he has recently become the guardian of the mint's majority shareholder (an elderly terrier) and snubbing Vetinari's offer would activate an Assassins Guild contract, he reluctantly accepts. Pratchett throws in a mad scientist with a working economic model, disappearing gold reserves and an army of golems, once more using the Disc as an educational and entertaining mirror of human squabbles and flaws
One of the best Pratchetts
I love this book-have re-read it several times!