Flying Serpents and Dragons: The Story of Mankind’s Reptilian Past by R.A. Boulay proposes that ancient, technologically advanced reptilian beings (the Nephilim/fallen angels) colonized Earth, founded early civilizations in Mesopotamia, India, and Egypt, and genetically manipulated humanity. It suggests these beings are the source of global dragon/serpent myths. The book challenges conventional history and religion by providing a "forbidden" narrative of human origins, drawing on ancient texts and archaeological data.