Nancy Drew and the Hidden Staircase

A detective's bride and her bridesmaid are raped and killed on the eve of the wedding, and the bodies are left covered in red roses. The detective is drugged and framed for the murders and he must clear his name and find the killers.

After his negligence causes an innocent woman to go to jail, a lawyer and his colleagues work to clear her name.

A conman persuades his married lover to murder her husband for the inheritance, only for his reckless spending and infidelity to drive her away.

A Midwestern ingenue arrives in Hollywood to try her luck as an actress. An incompetent agent hooks her up with a production company which specializes in low budget B-movie fair, which starts being plagued by strange, deadly accidents.

The secretary of an affably suave radio mystery host mysteriously commits suicide after his wealthy young niece disappears.

A fiercely dishonest car salesman hires a new employee who owes a serious debt to loan sharks.

A neglected wife gets mixed up with an hypnotic charmer and murder.

The story deals with a professional hitman, who falls in love with the woman he sets out to murder.

Angela Russo, a sixteen-year-old girl, is found dead in a river, having been fatally violated with a large blunt instrument. Inspector Di Salvo is assigned to the case and focuses his investigations on St. Theresa's, the exclusive school where Angela boarded. Three of the murdered girl's classmates, Franca, Paola and Virginia (who call themselves "The Inseparables"), receive threatening poems from an individual using the name "Nemesis." Bizarre "accidents" start to befall the girls: Franca is injured when someone causes her horse to bolt and Virginia nearly breaks her neck on marbles left at the top of a staircase. But Di Salvo is determined to find the killer, even if it means using unorthodox methods. He is aided by Angela Russo's little sister Emily, whose helpful clues lead to a boutique owned by a dubious character and a vice ring where "rich influential men pay well for teenage favours..."

In the midst of Nazi air raids, a postman dies on the operating table at a rural hospital. But was the death accidental?

When various trustees of the Van Traylen Orphanage begin dying in close order, it's at first written off as a coincidence. But, when a school bus accident very nearly takes out three more of them along with a group of orphans, Col. Bingham and his pathologist friend, Mark, begin looking into the deaths. They come to think the answer lies with one of the girls on the bus, who has vivid memories of things she could not possibly have seen.

A team of altruistic vigilantes destroy evidence to keep as many people from prison as possible, but when one of their crime scene clean-ups is revisited by the killer, the strength of their convictions is tested.

When a gunman opens fire on a crowded city bus in San Francisco, Detective Dave Evans is killed, along with the man he'd been following in relation to a murder. Evans' partner, Sgt. Jake Martin, becomes obsessed with solving the case.

The relatives of a recently deceased man gather at his eerie mansion but before his will can be read, they start being murdered one by one.

An elderly couple move into an old, supposedly haunted abandoned house. A young girl comes to live with the pair as a companion for the wife. However, soon the girl is possessed by the spirit of another girl, a wealthy woman who had once lived in the house but who had been murdered there.

Grace Winter, a young woman on trial for murder, recounts the tale of how she survived a shipwreck at sea in a lifeboat that initially carried too many people.

Caesar, an effete tough guy and his slovenly half brother, Otto, have signed up as summer camp counselors. But when the mysterious Carrie shows up, the other counselors start disappearing one by one.

A detective in Toyama is forced to confront his painful past when he takes on a murder case involving his two estranged childhood friends.

Greedy heirs wait in a mansion for a rich cat lover to die, only to learn her cats come first.

A woman dressed in black is murdering young women. The police question lawyer Anselmi for whom one of the girls worked as a secretary, and it turns out that all the victims were friends of lawyer's wife Leonora.