In 2014, a shocking and gruesome discovery was made in the ancient Egyptian city of Abydos: a tomb, untouched for thousands of years, containing the mutilated remains of a pharaoh. Most remarkably of all, official records say this king never existed. Who was this unknown ruler and why is there no apparent record of his reign? Follow investigators across the globe as they attempt to piece together the life and death of Woseribre Seneb-kay and the breakaway dynasty he governed during one of the most violent and volatile periods in the country's history.