Necroscope
By Brian Lumley
Series: Necroscope

"Buried in the Romanian mountains, trapped in unlife, Thibor Ferenczy teaches his human tool, Boris Dragosani, to rip secrets from the minds and bodies of the dead, to gain world domination, but Harry Koegh, the Necroscope, can save both the worlds of the living and of the dead." (summary from Amazon.com)

Paperback Info: ISBN: 0812521374, Tor Books (Available, shown)
Hardcover Info: ISBN: 031285787X, Tor Books (Unavailable)