Catherine Sykes disappears after a midnight drive with Professor Andrew Gentling . When she's presumed murdered, his friend Martha convinces him that he's a prime suspect and should investigate before he's arrested.

It's a deadly play for power when a Mafia chieftain's top gun goes straight and threatens to testify against the big boss and his cruel, nationwide network of crime. The picture, which was shot in a semi-documentary style, was inspired by the Kefauver investigations of 1950-51.

The CIA sends playboy Mike Trent to Alaska with agent Vee Langley, posing as his "nurse," to investigate flying saucer sightings. At first, installed in a hunting lodge, the two play in the wilderness. But then they sight a saucer. Investigating, our heroes clash with an inept gang of Soviet spies, also after the saucer secret.

A petty thief schemes a big score when he plans an armored car robbery.

There's a deficit of good, honest women in the West, and Roy Whitman wants to change that. His solution is to bring a caravan of over 100 mail-order brides from Chicago to California. It will be a long, difficult and dangerous journey for the women. So Whitman hires hardened, cynical Buck Wyatt to be their guide across the inhospitable frontier. But as disaster strikes on the trail, Buck just might discover that these women are stronger than he thinks.

When he learns that a gangster has taken over his nightclub and murdered his partner, returning WWII hero Joe Miracle steals the money from the club's safe and hides in a settlement home, while the mob is on his tail.

A re-edited Italian-language dubbed version of the original Godzilla, using as a basis the U.S. version, "Godzilla, King of the Monsters!" (1956), plus WWII newsreel footage and clips from other science fiction films. The re-edited film was then colorized via a process called "Spectrorama 70" consisting of applying various colored gels to the black and white footage. The film's opening and ending also features new music composed by musicians Fabio Frizzi, Franco Bixio, and Vince Tempera (under the pseudonym Magnetic System).

During World War II, an American bomber pilot is rescued after drifting at sea aboard a raft. After being administered truth serum, he tells the doctor a story of how he and the three survivors of his plane crash washed up on an island that was inhabited by a tribe of beautiful primitive cave-women, dinosaurs and a group of savage cavemen who are bent on abducting the women for breeding purposes.

With the advent of the American Civil War, three partners in a ranch see how this is destroyed. Needing money, will join the Confederate troops, each for their particular motivations.

During World War II, a junior American Army officer, Lt. Peter Stirling, gets sent to the psychiatric ward whenever he insists that an Army mule named Francis speaks to him.