Affair in Trinidad

On the Italian coast, writer Paul Decker has grown unhappy in his marriage and executes what appears to be a perfect murder of his wife. While Paul is believed to be writing a book in France, his stepdaughter, Candy, suspects him of murdering her mother, as well as her father years before. With the police unwilling to investigate any further, Candy sets out to confirm her suspicions and take Paul down herself.

Marian Forbes has been having an affair with her boss and when he drops her for another woman. In an act of jealousy and greed she convinces an acquaintance to murder her former lover and then impersonate him just long enough to get their hands on a large sum of money.

Newspaper men compete against each other to find a serial killer dubbed "The Lipstick Killer".

After two gang-related killings in "Center City," a suspect (who was framed) is arrested, released on bail...and murdered. Inspector Briggs of the FBI recruits a young agent, Gene Cordell, to go undercover in the shadowy Skid Row area (alias George Manly) as a potential victim of the same racket. Soon, Gene meets Alec Stiles, neurotic mastermind who's "building an organization along scientific lines." Stiles recruits Cordell, whose job becomes a lot more dangerous.

In a remote village in occupied Europe, the SS pursue their inhuman treatment of captured partisans in efforts to force them to betray their comrades.... while Fraulein Krast, a sadistic biologist, concentrates her efforts on the womenfolk with refined tortures and humiliation, leaving them to the mercy of a sex-crazed half-man, half-beast she has created with experimental injections.... And as advancing Allied forces approach the village, Krast herself becomes a victim of her own fiendish rituals....