A series of murders in Michigan lead an American secret agent to Amsterdam, where he uncovers a plot to imperil the world with a potent new drug.
A US Secret Service agent must go to Hong Kong because of the disappearance of some important documents that carried her former partner in the Korean War. These documents, if they fell into enemy hands, could be very dangerous and cause many more deaths.
A veteran US Secret Service agent must thwart the covert conspiracy of an enemy spy network that threatens the world's safety.
Agent Lemmy Logan is investigating the case of a missing NASA scientist and discovers that an ex nazi is developing a new super weapon.
An airplane crashes in Spain. The Russian as well as the Chinese government take care of the events because on board there was a "black box" containing precious and dangerous devices for the whole world.
A corrupt cop steals evidence of a Mafia drug ring with plans to sell it to their rivals, but is hunted by the mafia and government agents.
A secret agent is assigned ot rescue the daughter of a deceased East German scienist, who discovered a valuable formula.
Lucio sees his holiday on the Italian Alps interrupted when he is suddenly and unwillingly involved in an International plot involving fake dollar bills.
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.
An electronic ray that can counter any aerial attacks has just been invented by Professor Goodwin, but before he can put in good hands, he is kidnapped by a criminal organization, that starts an international bid for him and his invention among the rogue countries of the world. The CIA sends Agent Sigma 3 to find the Professor before the transaction takes place. His mission takes him from Rome to Tangiers, and to Barcelona.