Gangsters and Lt. Grant look for a convicted crook's safe-deposit key.
A murder attempt is made on a pianist.
Hobos are suspects in a series of murders.
A button is the only clue to a murder.
A corpse is found hidden in a carousel.
A rich man becomes the victim of some greedy friends.
Lt. Grant sniffs something's fishy about the executor of an old couple's estate.
A war bride gets embroiled in a murder.
Grant tackles a year-old unsolved murder and robbery.
An ex-convict has started an honest business; now someone is trying to end it.
Charges and counter-charges abound as Grant looks into the blackmailing of a kindly woman.
Grant tries to convince a crook that the woman he loves is very dangerous.
Lt. Grant isn't convinced that a hot-blooded sculptor murdered the man who married his former sweetheart.
A lonely wife shoots at a prowler.
A murdered wife, an abandoned child and a disappearing blonde pit Grant against a clever woman lawyer.
Three friends have been getting blackmail notes written in violet ink.
Publicity hampers the investigation of a businessman's murder.
Romance and politics clash in a big city.
A blonde wearing an orchid is found murdered.
Grant boards a cruise to get evidence against a killer.
A man believes his daughter's life is in danger, but he's the one who gets killed.
A recorded appeal for help reaches Grant.
A lion stalks the winter quarters of a circus.
A frantic call catapults Grant into the world of teenage hot-rod enthusiasts.
The disappearance of an expensive cat is the first in a series of strange events.
Grant goes to sea to find an embezzler and killer.
Grant tries to find the man who shot a couple on a lonely road.
Grant turns up several suspects in the slaying of a young lawyer.
Grant investigates the murder of a blind war veteran.
Sherry Allen finds a body and a lot of trouble.
A dream, a suspicious fire and a secret marriage are the elements in a mystery that Grant tries to penetrate.
Strained relations in the Wilson family hamper Grant's search for their stolen jewels.
The daughter of a released convict tries to stop her father's revenge.