Drummond's wedding with Phyllis is interrupted when the inspector guarding their gifts is killed. He tries to trace the killers and uncovers the mystery of diamond counterfeiters.
Carroll Baker plays a dual role as translator Julie Harrison and her twin sister Mary. The serpentine plot begins as Julie tells her lawyer Dave Barton that Mary's life is being threatened in London while Julie herself is being stalked by a mysterious stranger in Amsterdam.
After the murder of their families by a terrorist bomb, five young adults are trained as a hi-tech, anti-terrorist team with a mission to search and destroy high-profile terrorist groups.
A corrupt General plans on smuggling one million US dollars out of the Banana Republic he dominates. Local revolutionaries plan on stealing the cash but are thwarted when a bandit leader they are working with double crosses them. A tough cop and her boyfriend help two of the female revolutionaries escape from prison hoping that they will lead them to the cash, which they plan on keeping for themselves.
Magazine writer Ann Mason infiltrates the United Defenders, a public service organization which is actually a front for racketeers. But a case of amnesia threatens to blow her cover.
Europol Agent Tom Brindle is called to Barcelona, Spain, to track down the notorious serial killer known as Pygmalion. A set of fingerprints lead to a young, volatile soldier, Marco Soler. Agent Brindle arrests Marco and intensely interrogates him, convinced that he has his man. Marco has an airtight alibi though and further investigation of the suspect leads Agent Brindle to a shocking discovery.
The oldest son of the White Tiger Gang is pressured by his family to settle down and get married; but when he finds the perfect girl, she turns out to be a state prosecutor for crimes of violence, specifically gangster related. The district attorney is a look-a-like of the gangster's former fiancee who died getting hit by a truck. Their feelings develop for each other but her co-worker turns out to like her as well. She does not like him so the latter turns to the darker side of the law, by conspiring with the rival Axe Gang. Unfortunately for him, the mafia son has more that a few tricks up his sleeve and gets support from his dim-witted brothers and henchman.
John and Michael are taught by their father at a young age that people are merely piggy banks... if you need money, just break one open. Charming and brilliant, they roam the country robbing and murdering anyone foolish enough to get in the car with them. After their partnership becomes strained and John sets off on his own, he discovers his father had a secret family... another wife and a daughter in another state. With a renewed sense of purpose he sets out to find and kill his stepsister. But this may be more challenging than he thinks... has he met his match?
David Marshall Williams is sent to a prison farm where he works in the tool shop and eventually develops the precursor of the famous M-1 Carbine automatic rifle used in World War II.