A nerdy high school super whiz experiments with a chemical which will transform his guinea pig "Mr. Mumps" from a gentle pet into a ravenous monster....
A dark and stormy night in a drugstore. The druggist mixes a potion and falls asleep. The skull-and-crossbones on the bottle comes to life and drips...
Jewel thieves become interested in an invisibility formula invented by Professor Nakazato and want to use his invention to acquire a diamond necklace...
