Layton Film Productions Inc.

When American private eye Steve Marshall receives a mysterious summons to the sweltering streets of São Paulo, the mission seems clear-cut: find Louise Dunning, a woman on the run for the murder of her husband. But in the shadows of Brazil, nothing is as it seems. As Marshall closes in on his target, he begins to realize he isn't the one leading the hunt.. he's being steered.

Two escaped convicts are found hiding in a rocketship built by a renegade inventor, who forces them to become the crew for a trip to the Moon. Also on board, as inadvertent stowaways, are his assistant and his secretary; and none of them are aware that the inventor is actually a Lunarian explorer sent to Earth by the dying Lunar civilization and the only remaining male member of that civilization.

Dr. Frankenstein's insane grandson attempts to create horrible monsters in modern day L.A.