After squandering his grant money, despondent and recently widowed anthropologist James Krippendorf must produce hard evidence of the existence of a heretofore undiscovered New Guinea tribe. Grass skirts, makeup, and staged rituals transform his three troubled children into the Shelmikedmu, a primitive culture whose habits enthrall scholars. But when a spiteful rival threatens to blow the whistle on Krippendorf's ruse, he gets into the act as well.

During World War II, an American bomber pilot is rescued after drifting at sea aboard a raft. After being administered truth serum, he tells the doctor a story of how he and the three survivors of his plane crash washed up on an island that was inhabited by a tribe of beautiful primitive cave-women, dinosaurs and a group of savage cavemen who are bent on abducting the women for breeding purposes.

A feature film. Tarzan, who has returned to Africa after living in England, sets off to Guatemala in search of an old friend who may have survived a plane crash there. Also in Guatemala are Ula Vale and Major Martling who are out to find the riches of the Green Goddess. They join forces after they learn that a competitor, Raglan, has already set out ahead of them. Tarzan has to rescue everyone after they are taken prisoner. When they get to the hidden city, Tarzan finds his friend alive and the fabulous treasure.

Anthropologist Max Scarry mysteriously disappears while doing excavation/research of a lost New Zealand tribe on a remote island. His wife and his twin brother Edward are clueless as to what could have happened, a situation complicated by their city's police suspecting that one of the brothers murdered a local prostitute who was found with a strange tribal charm on her body matching one found in Max's abandoned hut. What most certainly isn't helping matters is the strange behavior of Max's daughter as she seems to have visions beyond possibility, warnings of a supernatural threat and her uncle's fate - and she's the film's narrator, to boot. Edward decides to go to the island to find out exactly what happened, but the deeper he goes into the mystery the more perilous and unknowable his world becomes, leading towards a shocking fate that raises more questions than it answers. (cont. http://view-from-the-paperhouse.blogspot.de/2014/10/the-threat-of-ancient-echoes-lost-tribe.html)