2027. Six decades after magic overthrew technology. Donal Cuthbert, master wizard in training. Survivor of duels, betrayals, corporate plots and worse. Now he faces his greatest challenge yet. The Fae Courts of Winter and Summer, united to name Donal their ambassador. He must represent both their interests at a meeting with powers from Earth, Luna, and Mars. Donal knows his "allies" hide their true agenda. But his opponents hide something even more dangerous. The Sphinx Principle, a thrilling tale of adventure and intrigue from high space to the realms of Faerie, with deals and betrayals, faeries and wizards, and space battles between magic-driven ships. The fifth novel in the Rise of Magic series from Stefon Mears, author of the Cavan Oltblood series and the Spells for Hire series.