For tonight, we have the mad WTFery of The Beach Girls and the Monster. It hearkens back to a simpler time, when the world was in black and white. When women cackling madly while they ran across the beach was supposed to be enticing. When beach music made any situation better, even one in which beach girls are being killed. When surfing can take precedence over once's life.
If nothing else, you must watch the first five minutes for the first murder, so you can see the oddly pulsating monster head--to the sounds of I Can't Believe It's Not Brubeck! You will believe that a Fantigua can kill!
This comes in a boxed set with some other classic bits of cinemas: The Beast Box.