Two Scotland Yard detectives investigate the murder of a young woman of mixed race who had been passing for white. As they interview a spate of suspects -- including the girl's white boyfriend and his disapproving parents -- the detectives wade through a stubbornly entrenched sludge of racism and bigotry.
Berlin provides the backdrop for this crime drama that centers on a military doctor falsely accused of dealing illegal drugs. Determined to prove his innocence, he escapes from the MPs and ends up holing up in the apartment his wife rented. He doesn't know that she has sublet the flat to a nightclub singer. When he finds out, he begs the singer to assist him. She is attracted to him and agrees. The doctor believes that his wife is behind the black-market dealings, but in the end, they find the real culprit.
Nico, a drug dealer, murders a telegram messenger-boy "for kicks", egged on by partner-in-crime, TV director Francis. Cliff, the boy's older brother, investigates his death due to the slow progress made by the police.
Unpopular at school because of his high I.Q., neglected by his weak and alcoholic father, Marvin is easy prey for the campus vamb, Betty, who pretends an interest in Marv only so that he will write her term paper. When the two are discovered cheating by their professor, the longed-for scholarship recommendation is withdrawn. Meanwhile the jealousy of Betty's boy friend has been aroused and when Marv learns that he can only hold the girl's affections by offering her riches, he plans a million dollar robbery. Even the professional gangsters with whom he works are amazed at the brilliance of the young genius. Again, however, he is double crossed by Betty who has warned her friend and his gang of the plan. When the police also learn of the activities the project as well as the lives of a number of the boys ends in tragedy.
A madman is on the loose... killing fashion models that appear on the cover of magazines. The police start a manhunt in an attempt to capture the killer.
A sleazeball (Ronald Long) who supplies women to his public-relations clients explains the rules of the game to his latest acquisition (Jeanne Rainer).
Both Scotland Yard and an amateur American sleuth are tracking a master criminal known as The Frog. This moniker refers to the bulging-eyed mask worn by the evildoer, and is reflected by the frog icons painfully tatooed onto the forearms of his henchmen. The trail leads to the country manor of an enigmatic, steely-eyed nabob, whose repressed son has eyes for the artistes at the Lolita cabaret, and whose lovely daughter captures the fancy of both the American playboy and the villain himself. Murder, kidnapping and seduction ensue.
Mystery writer Cornelia Van Gorder has rented a country house called "The Oaks", which not long ago was the scene of some murders committed by a strange and violent criminal known as "The Bat". Meanwhile, the house's owner, bank president John Fleming, has recently embezzled one million dollars in securities and has hidden the proceeds in the house, but is killed before he can retrieve it.
Semi-retired Michigan lawyer Paul Biegler takes the case of Army Lt. Manion, who murdered a local innkeeper after his wife claimed that he raped her. Over the course of an extensive trial, Biegler parries with District Attorney Lodwick and out-of-town prosecutor Claude Dancer to set his client free, but his case rests on the victim's mysterious business partner, who's hiding a dark secret.
A young alien falls for a pretty teenage Earth girl and they team up to try to stop the plans of his invading cohorts, who intend to use Earth as a food-breeding ground for giant lobsters from their planet.