Professor Groves, an expert in prehistoric life, proves his theories with an extract that’ll regress a cat to a saber-tooth tiger and man to a Neanderthal. Starring Robert Shayne, Joyce Terry, and Richard Crane. It has been speculated that bigfoot and yetis are leftover Neanderthals living on the fringes of society. Best not to drink that saber-toothed tiger juice!
