Pyramids - Terry Pratchett

'Look after the dead', said the priests, 'and the dead will look after you.' Wise words in all probability, but a tall order when, like Teppic, you have just become the pharaoh of a small and penniless country rather earlier than expected, and your treasury is unlikely to stretch to the building of a monumental pyramid to honour your dead father. He’d had the best education money could buy of course, but unfortunately the syllabus at the Assassin's Guild in Ankh-Morpork did not cover running a kingdom and basic financial acumen...