A 'nature strikes back' eco-drama built on sturdy, if predictable, Ten Little Nigger lines. Elliott plays an ecological photographer snapping wildlife and garbage around the private island home of a millionaire family with nasty habits like spraying insecticide, collecting hunting trophies, catching butterflies. They gather annually for birthday celebrations under the iron fist of patriarch Milland; multiplying and mutating into giant (but not unbelievable) species as a result of the pollution, the reptiles become malevolent, causing the deaths of one after another of the family. Two good points: no revenge-on-frog scenes after they climactically overwhelm Milland in the abandoned house; and apart from some manipulation by cross-cutting, all the reptiles behave fairly normally. Filmed in the usual crisp AIP style, with dazzling sunlight and ominous shadows.