Ward Ramsey

After undersea explosions near a Caribbean island, prehistoric creatures are unleashed on the unsuspecting population. Freed from his watery tomb, as well, is a very friendly Neanderthal man who proceeds to befriend a local orphan boy. The boy, Neanderthal and irritated dinosaur make for an interesting dramatic climax. (imdb)

Audie Murphy is again the kid who puts on a badge to catch the bad guy, skillfully played by Barry Sullivan. On the way back to town the two develop a curiously close relationship - Sullivan passes up several chances to get away - but in the end Sullivan "asks for it" and Murphy obliges. (imdb)