Lady Lorraine Lister, a financer of expensive experiments, has discovered a way to obtain pure diamonds by the means of a radiation device. She hires five renowned scientists to participate in additional experiments regarding this new contrivance. However, it soon happens that the device is stolen, and the scientists mysteriously disappear! Agent Dick Smart is called in by the CIA to track down the scientists and recover the device. With the help of incredible gadgets and lots of bravado, he manages to locate the source of an underground operation in Rio De Janeiro: an operation headed by a mysterious man with a speaking device fastened to his throat.

Redhead Mary is a girl who dresses like a man to better approach, and rob the jewels worn by the pretty ladies of her time.

1943. The affair between Anna, unhappily married to wheelchair-bound Pino, and deserter Franco unfolds in foggy Ferrara, intertwining with the power struggle taking place within local Fascist ranks that culminates in a massacre of civilians, including Franco's father – Pino sees it all from his window, but will he tell anyone?

Luis de Monterey is a ship captain who is pitted against a crafty pirates.

Benito, son of a fascist mayor, returned from the countryside of Russia, rebels against the family and joins a group of partisans.

Sartana is falsely accused of robbing a bank, and must find the real robbers and clear his name.

After finding a very precious and huge diamond, the famous geologist Hutton mysteriously disappears. The discovery of this jewel sparked a battle between the international underworld.

Secret Agent Bart Fargo chases the kidnappers of the inventor of a death ray.

Though Genghis Khan eventually sought peace with the West, his death in 1227 AD puts into power his three war-like sons: Sayan, Susdal, and Kin Khan. These sons quickly overrun the city of Tuleda and take prisoner Princess Bianca, though young Prince Alessio escapes. Hercules comes to the rescue of Bianca, winning her freedom in a tournament in exchange for becoming a slave himself. Forces from the West soon come to re-take Tuleda and Hercules -- freed from his bonds -- helps to dispatch Genghis Khan's three sons while again saving Bianca and reuniting her with her young brother.

Strongman Maciste must battle the one-eyed Cyclops monster that is ravaging the land of Sadok, while at the same time fending off the advances of the evil Queen Capys, who wants to do a little ravaging of her own.