The best Lester Matthews’s mystery movies

London, 1888: on the night of the third Jack the Ripper killing, soft-spoken Mr. Slade, a research pathologist, takes lodgings with the Harleys, including a gloomy attic room for "experiments." Mrs. Harley finds Slade odd and increasingly suspects the worst; her niece Lily (star of a decidedly Parisian stage revue) finds him interesting and increasingly attractive. Is Lily in danger, or are her mother's suspicions merely a red herring?

The Japanese detective (Peter Lorre) rounds up a league of assassins for Scotland Yard.

Passengers on an ocean liner can't recall how they got onboard or where they are going. Soon it becomes apparent that they all have something in common.

Spoiled socialite Cynthia Grace is suffering from a blood clot. Not unexpectedly, Tommy Coalt falls in love with Cynthia, much to her parents' dismay. Soon he's drawing up plans to marry the girl and setting up private practice in a smaller town.

After nearly running over him with her cab, Patty Mitchell picks up a fare who claims to have amnesia. As he fumbles to remember the basic facts of his identity, Patty becomes interested in the stranger and decides to help him in his search. But as the pieces of the puzzle begin to fall into place, and Patty's interest becomes more personal, the stranger finds that he is the prime suspect in a murder case.

One of the members of a sorority is found murdered. Although the police are called in to investigate, some of the girls decide to do some sleuthing on their own to unmask the killer.

Complicated plot involving missing stamp collection and kidnapped businessman, with the Lone Wolf keeping one step ahead of the police in Havana trying to solve the crime and make a profit.

The citizens of a tiny Cornish village are tormented during World War II by a headless ghost which is haunting the local tin mine.

This first film in the Columbia series was based on the radio serial, "The Decapitation of Jefferson Monk." A detective tries to protect a man who has predicted his murder will take place in three days.

An investigator for the District Attorney's office quits to open his own detective agency. However, business is so bad that he finally decides to give it up and go back to his old job. As his wife is at his office closing up, a wealthy society matron walks in with a case: she wants to know if her husband is having an affair with his ex-girlfriend, who is now married. The wife accepts what looks to be an easy case, figuring than she can then persuade her husband to re-start the agency. However, when the client's husband is found murdered, she decides to investigate the murder herself. Her husband has also been assigned by the D.A. to investigate the murder, and he doesn't know that his wife is also on the case. Complications ensue.

"Bulldog" Drummond is vacationing in his country home in England, and his house if rifled by two thieves. After they leave he finds a card marked with some mysterious letters. Doris Meredith comes by the next day, pretending her car has broken down. Drummond knows better but plays along with her. Drummond calls Scotland Yard Inspector Holmes, and is informed that some of the letters comprise the code-name for a Yard-man who disappeared while carrying some diamonds from France to England. Doris tells Drummond the man is her brother. Drummond uses a decoy to lure the thieves out of hiding, but they adduct Doris.