Those of us who are voracious readers can never get our fill. There is always some intriguing new mystery or riveting new thriller to devour, and an endless stream of new releases to add to our reading wish lists.
But sometimes you just crave a classic. These are the books that created the scaffolding for the genres we know and love—and they are just darn good.
Every month, we’re bringing you a selection of free ebooks to read that are perfect for all you timeless sleuths out there—lovers of all things mysterious and thrilling.

El Dorado
In this sequel to the classic novel The Scarlet Pimpernel, Sir Percy Blakeney, the English aristocrat known as the Scarlet Pimpernel, returns to save innocent people from death and imprisonment during the French Revolution.
His men all willingly leave behind lives of luxury to help him save the victims of tyranny. But one of his men, Blakeney’s own brother-in-law, betrays his leader to enemies that are set on destroying the Scarlet Pimpernel.

Manalive
The newest tenant at the Beacon House, Innocent Smith, brings energy and fun into the boring London boarding establishment. But all of his newfound friends are shocked when they learn that the mysterious new boarder is wanted for burglary, polygamy, desertion of a spouse, and murder.
Now, a jury of his peers must decide if Innocent is really guilty or if all is not as it seems on the surface.

The Insidious Dr. Fu-Manchu
When colonial police commissioner Nayland Smith is shot in the Burmese Rainforest with a poisoned arrow, he lies delirious on the forest floor for three days before he can walk again and set out to catch the man who tried to kill him.
The culprit: Dr. Fu Manchu, an evil mastermind and agent of a secret organization set on destroying the Western world.
Can Smith and his loyal friend track down the killer on a search that leads from London to the deserts of Egypt?

Monsieur Lecoq
Paris policemen rush to a local bar to find three men dead and one greatly injured. The one living man claims he murdered the others out of self defense, but dies before he can say more.
Now it is up to the superbly perceptive Monsieur Lecoq to use his powers of observation to determine the identities of the murderer and the victims and to solve the mysterious case.