Matthew J. Costello
Author of two early solo Call of Cthulhu scenarios: The Thing in the Darkness (Fantasy Gamer #3, 1983/4) and Alone Against the Dark (1985).
Costello was the writer of the computer game The 7th Guest, among numerous other titles.
He is a Bram Stoker award nominee, and, the developer of "Zoog Disney" programming block the Disney Channel (1998-2002)
