Most classical sci-fi from K. Zeman. Four young boys visit a dinosaur exhibit at the New York city Museum of Natural History. They then row out onto Central Park Lake where they find a secret cave and paddle into, and go back-in-time into a wondrous prehistoric world filled with the very dinosaurs they had just seen.

When attractive secretary Sarah Parker, sets out for an illicit weekend in the countryside with Steve, her adulterous office manager, the clandestine weekend takes a horrifying turn when …