Cassio tracks the sinister High Priest to his Temple of the Sands in the middle of the desert. only to find himself bested by the High Priest's disciples. who share Cassio's powers but are better trained to control them. It's up to his slave Alva to save him from near death. with help from a mysterious stranger who turns out to be... Cassio's mother! Reveals and reversals abound as. in the present day. Ornella Grazzi finds the fourth murderer. and the origin of Cassio's powers is brought to light in this thrilling conclusion to the first arc of the historical adventure series.