Lord of Lies — David Zindell

Valashu Elahad, the seventh and youngest prince of the royal house of Mesh, was thrust into a quest to seek ,a mythical object, the Lightstone, in order to stop the dreaded Dark Angel Morjin from enslaving all the nations of Ea. Val and his stalwart companions braved great dangers in their search for this elusive totem, and, despite all odds against them. they found the sacred Cup of Light.

But sometimes fulfilling a quest only brings more trouble. Now that the Lightstone has finally been found, Morjin knows where it is, and he will use all of his dark magic to seize this ultimate source of power.

Val wonders who he can trust as he encounters treasonous plots and betrayal by those closest to him. Perhaps worst of all, he must confront the nagging suspicion in his heart that he is a false vessel to guard the Lightstone ... and a potential weak spot for Morjin to use to wreak havoc on his beloved world.