In the jungles of Amazonia, they find a white man without a tongue. He is dying but manages to pass a token with the name Gerald Clark to a missionary—an American Army special forces operative. Gerald Clark was an intelligence agent and vanished in Brazil four years ago along with an expedition organized by the tropical plant specialist Karl Rand. What secrets do these jungles keep in their virgin forests—the most mysterious region on Earth? Where was Clark for four whole years? And what fate befell the rest of the expedition members?
In his search for answers, the young detective discovers a film reel in the attic of the old Buckshew mansion…