Voice:

Toward the end of the war in Vietnam, an unusually high percentage of American servicemen suddenly manifested symptoms of psychosis. Most of them were in combat or slated for combat and had no prior history of mental disturbance.

These facts plus the epidemic scope of the problem and the controversial nature of the Vietnam War led American authorities to wonder whether many if not most of the men were faking. To probe the mystery, the government established a secret network of study centers and clinics.

The last of these, # 18, was highly experimental in nature and was set up in an old, abandoned castle in the Pacific Northwest of the United States. Among its inmates was an astronaut who, during final countdown, had aborted a mission to outer space.