The Cane Chronicles The Serpent"s Shadow is a 2012 fantasy adventure novel based on Egyptian mythology written by Rick Riordan. It is the third and final novel in The Kane Chronicles series, which tells of the adventures of modern day fourteen-year-old Carter Kane and his thirteen-year-old sister - Sadie Kane, as they discover that they are descended from the ancient Egyptian pharaohs Narmer and Ramesses the Great.