The Mage's Ghost: Mages of Martir #4

Book Four in the Mages of Martir series With the gods scattered and afraid and Uron now closer than ever to fulfilling his sinister plans, Darek Takren and his ragtag band of allies are now the only obstacle standing between Uron and the complete destruction of their world. Yet defeating Uron appears utterly impossible until one of Darek's allies suggests a plan so dangerous, so deadly, that no sane human would even dream of trying it: Travel to the afterlife and convince the gatekeeper of the afterlife to summon Uron's soul back to where it belongs. With no choice but to go with this plan, Darek races to the afterlife to defeat Uron once and for all, although he may not be ready for what he discovers beyond the grave.