Private eye Dold, a specialist in surveillance tasks, is sent to investigate a Frankfurt bordello boss. He's a pain in the butt for many in the red-light district and is to be overthrown to pave the way for financially strong speculators to lucratively redevelop the area. Dold, who always saw his work as morally justified, comes to doubt the rightness of his actions far too late.

After getting hired to probe a suspicious death in the small town of Wander, a mentally unstable private investigator becomes convinced the case is linked to the same 'conspiracy cover up' that caused the death of his daughter.

A seemingly good Samaritan hires a private detective to prove a teen sitting in prison on a murder charge is innocent. His investigation discovers deep corruption in a Connecticut town and finds the woman isn't everything she is pretending to be either.

Victoria "V.I" Warshawski is a Chicago based private detective who agrees to babysit for her new boyfriend; then he is murdered. Being the detective type, she makes the murder her next case. In doing so she befriends the victim's daughter, Kat, and together they set out to crack the case.

Private detective Dirk Trent, a collector of cigarette butts, a "smooth" ladies man, a wearer of bad suits, and he's convinced there's more to an incident he caught on tape, where a man seemed about to murder his mistress with an axe. Delving deeper, the film enters some seldom-trodden territory as it slips easily into horror and sci-fi, while still maintaining the hilarious dialogue

Magic and murder connect an actress, a private eye, a senator and a witch in 1950s Hollywood.

In Puerto Rico to investigate a glut of contraband diamonds that are flooding the world's jewel market, Mr. Moto and his sidekick, a wrestler, find themselves involved in murders by thrown daggers, the frame-up of an overstressed Army colonel, and a pirate gang led by an unknown boss who has inside knowledge of the ensuing investigation.

Detective James Lee Wong must find the "Eye of the Daughter of the Moon," a priceless but cursed sapphire stolen in China and smuggled to America. His search takes him into the heart of Chinatown and to the dreaded "House of Hate" to find the deadly gem before it can kill again.

Marc Elbichon, a novice private sleuth, is investigating a wave of assassinations bearing a particular characteristic: the perpetrator, dubbed the "telephone killer" always strangles his female victims with a telephone cord.

A young college student is found stabbed to death,and private detective Vares life takes an interesting turn when the girls family asks him to investigate the case.

John Rosow drinks to forget. He is a former New York City cop turned Chicago-based private investigator. At the last minute, he is hired by someone he's never met to follow a middle-aged male subject on the soon-departing California Zephyr train to Los Angeles.

Private detective and former football player Harry Moseby gets hired on to what seems a standard missing person case - a former Hollywood actress wants Moseby to find and return her daughter. Harry travels to Florida to find her, but he begins to see a connection between the runaway girl, the world of Hollywood stuntmen, and a suspicious mechanic when an unsolved murder comes to light.