Better-than-average British entry into the 60s SF mutant-monster cycle, with prehistoric Godzilla junior put on temporary display at a London circus before rampaging big mom trundles in for the predictably cataclysmic finale. With Bill Travers; Eugene Lourie (The Beast From 20,000 Fathoms), best remembered as production designer for a handful of Renoir classics (The Rules of the Game, The Southerner, The River, etc), directed. 78 min.