The Tower of Daelfaun (The Tales of Zanoth Book 1)

For Paul Stevens, a computer programmer from Aiken, SC, the worst part of falling asleep in a new place isn't the air mattress, but waking up in a world ruled by the undead. Drawn into a war on Zanoth between the living and the powerful lich Myra Kel Marran, Paul must give up any hope that this is just a bad dream, or that the two warriors who summoned him from Earth have any way of sending him back there.