Dr. Thorndyke is asked by a former student to help on his first murder case. A prostitute is murdered and it seemed to be a woman has killed the lady. Dr. Thorndyke helps find the actual murderer with the evidence available.
After amateur detective Max Carrados ruins the alibi of an Irish militant accused of murder, the man's colleagues plot their revenge. To save his life, a trapped Carrados must find a way to get a message to the outside world-one that even a blind man could understand.
Private detective Horace Dorrington sees no conflict in helping himself while helping his clients. A promising new bicycle company presents him with an opportunity to cash in on his insider knowledge. But it's a dirty business, so Dorrington takes steps to ensure he's not taken for a ride.
Charismatic socialite Simon Carne adopts the persona of "Klimo" to solve crimes. Does professional jealousy explain antagonism to the celebrated private detective? Or is it something more? And even though Klimo solves case after case for his clients, why are none of the perpetrators ever caught?
A ghost detective named Carnacki investigates the haunting of a country house that threatens the wedding of the homeowner's daughter and her fiance. Carnacki does not suspect supernatural forces are at work in this case, but even a ghostbuster can be wrong.
When a priceless gem comes within grasp, detective Horace Dorrington cuts more than a few corners to get his hands on it. But he battles a surprisingly worthy adversary from an unexpected quarter, one as ruthless and determined as himself.
While investigating death threats against two sisters, Dixon Druce falls under the charms of their friend, the mysterious Madame Sara. Druce tries to track down the sisters' estranged half brother, who stands to inherit a fortune upon their deaths. The smitten detective also starts to uncover the secrets of their alluring friend.
Petty crime and international espionage intertwine when the Russian embassy hires Jonathan Pryde to do one job and his own government hires him for another. The private investigator discovers that the two cases-a money-counterfeiting operation and the theft of plans for a Royal Navy torpedo-are linked.
When a customer slumps over dead in a tea shop, Lady Molly of the Yard searches for the mystery woman who had been seated at his table. However, she runs into resistance from the dead man's family, who show little interest in solving the crime.
To solve the murder a rich but ill-mannered government official from Haiti, PI Martin Hewitt has several pieces of evidence to consider: a dead tortoise, a voodoo doll, a bloodstained axe, and a note from "an avenger." The one thing he doesn't have is a body.
Inflated claims about the powers of an expensive elixir put private investigator Romney Pringle in pursuit of a ruthless con man. The trckster has reason to believe that his customers won't complain, but Pingle sets out to destroy the crooked business.
An ex-con makes a rookie mistake-trying to sell a stolen ruby necklace back to the craftsman who made it. The jeweler, Bernard Sutton, soon discovers that a string of high-society women are losing their expensive adornments. Shunning the heavy-handed approach of the police, he sets his own trap to catch the thief.
A junior bank clerk elopes with a fortune-but without his fiancee. The police reconstruct the absconder's route, from bank to train station to the Continent. However, Martin Hewitt believes the trail is a little too easy to follow. With the help of the jilted lover, he embarks on a search to discover what really happened to the missing man.
