Hellborn is a novel written by Gary Brandner. It was first published in 1980.
ASTRAGOTH IS RISEN. SHE HAS BEEN CHOSEN.
A union of unspeakable terror awaits her—and there are only a few trusted companions she can turn to: her best friend, her doctor, her psychic, her lover.
But one of them is already possessed by the malevolently sexual demon Astragoth. To choose wrongly will damn her—and doom her young son…
From the sulfurous night of the centuries he has returned. He will have his bride—or he will level the earth. He is the Hellborn!