From the back cover:
Thunder shatters the stillness of the night while hulking monsters walk Savage Island . . . well paid mercenaries stalk the renegade Tigers in a race to prevent the theft of confidential industrial secrets . . . a KGB officer is found dead of a strange disease, clutching a note that suggests a unsuspected lurks inside Stormhaven . . .
STORMHAVEN is the setting for contemporary role playing game adventures. Set on Savage Island in Lake Champlain, Stormhaven is the fine mansion owned by Kenneth Allard, president of Allard Technologies. Life at Stormhaven is lived in a grand style, and the secret work that goes on in the laboratory beneath the mansion is innovative. Many interesting guests (most of them with more than one reason to visit) can be found in Stormhaven.
STORMHAVEN contains two booklets: one of descriptions of buildings, people, procedures and adventures, the other of maps and floor plans. Stats for Mercenaries, Spies and Private Eyes and Espionage! are included. As an added bonus, enclosed are 23 Cardboard Heroes for the main characters and security teams, created exclusively for this adventure!