Brotherhood of the Bolt

Brotherhood of the Bolt is a generic horror role-playing game supplement published in 1983 by The Companions.
Contents.
Several scenarios are detailed that a game-master can develop into a series of adventures, in which the player characters must try to foil the evil machinations of a necromancer's cult. Plots include including an expedition to a tomb and an attempt to enter a guarded castle undetected.
The book also includes new traps, monsters and detailed histories and descriptions of non-player characters.
The scenarios are not keyed to any particular role-playing game system, so the game-master must choose a game system and adapt the material to it. 
Publication history.
Peter L. Rice and Wm. John Wheeler, through their company The Companions, had previously published two adventures in the "Islandia Brotherhood Campaign" that could be used with any fantasy role-playing game such as "Dungeons & Dragons" or "RuneQuest". "Brotherhood of the Bolt" was the third in this series. The 40-page book with three maps was written by Rice and Wheeler with additional material by Ray Estabrook, Donna McKinnon, William R. Mohler, Matthew Needham, and Dennis O'Brien. The artwork was by Rice and Wheeler as well as John Carlson, Tom Cobb, Mary Coman, David J. Hutchins, Kevin LaChance, Matthew Needham, and Eric Pfusch. It was published by The Companions in 1983. 
Rice and Wheeler followed this book with "Street of Gems" and "Gems for Death".
Reception.
Ken Rolston reviewed this product twice in the pages of "Dragon":
Mike Dean reviewed "Brotherhood of the Bolt" for "Imagine" magazine, and stated that "a word to the GM: these modules will provide your group with many sessions of play, but only if you are prepared to put in the necessary time and work for conversion and full understanding of the plots running through each of them."