George Coulouris

When a local fisherman discovers the bodies of three murdered teenagers, private detective Evan is sent to the island to investigate. Evan and a group of archaeologists search for an ancient treasure but soon realize the killer is still on the loose.

While on an expedition to a remote part of the Amazon jungles, Dr. James Moran, slightly mad scientist, encounters a huge plant being worshipped by a mysterious race descended from the Incas.