Derek Hitchins is a consultant systems architect, with a lifelong interest in ancient Egypt and particularly in the pre-dynastic and early dynasties. In the Pyramid Builder's Handbook he turns his experience loose on the 3rd and 4th Dynasty pyramids as an evolving sequence, looking not only at how they may have been built, but on the logistics of maintaining the workforce, the nationwide organization, etc. In the Secret Diaries of Hemiunu, he lets his imagination loose and explores the social situation at the transition from Snefru to Khufu, and the design and building of the Great Pyramid, amid the social turmoil of the times...