Im Haus der Ghouls

From Author Wars - https://authorwars.com/books/im-haus-der-ghouls-3359348.html

Overview:

Title: Im Haus der Ghouls
Author: Helmut Rellergerd
Year: 1992
Type: Short Fiction
Series: John Sinclair
Number in Series: 791

Variant Titles:

1992. Im Haus der Ghouls