Out of Time's Abyss is a direct sequel to The Land That Time Forgot and The People That Time Forgot, continuing the lost world saga begun in the earlier stories. It connects the previous two installments, bringing in characters introduced in each. Burroughs completes the revelation of his lost world's unique biological system, only hinted at in the previous installment, in which the slow progress of evolution in the world outside is recapitulated as a matter of individual metamorphosis. This system forms a thematic element serving to unite the three otherwise rather loosely linked Caspak...

The story is set in 13th century England and concerns the fictional outlaw Norman of Torn, who purportedly harried the country during the power struggle between King Henry III and Simon de Montfort. Norman is the supposed son of the Frenchman de Vac, once the king's fencing master, who has a grudge against his former employer and raises the boy to be a simple, brutal killing machine with a hatred of all things English. His intentions are partially subverted by a priest who befriends Norman and teaches him his letters and chivalry towards women.

The novel picks up where Tarzan of the Apes left off. The ape man, feeling rootless in the wake of his noble sacrifice of his prospects of wedding Jane Porter, leaves America for Europe to visit his friend Paul d'Arnot. On the ship he becomes embroiled in the affairs of Countess Olga de Coude, her husband, Count Raoul de Coude, and two shady characters attempting to prey on them, Nikolas Rokoff and his henchman Alexis Paulvitch. Rokoff, it turns out, is also the countess's brother. Tarzan thwarts the villains' scheme, making them his deadly enemies. Later, in France, Rokoff tries time and...

The Monster Men is a 1913 science fiction novel written by American author Edgar Rice Burroughs under the working title "Number Thirteen." Cornell University professor Arthur Maxon, who has been experimenting in the creation of artificial life, travels with his daughter Virginia to one of the remote Pamarung Islands in the East Indies to pursue his project. Their departure is noted with interest by a young man, Townsend J. Harper, Jr., who is quite taken with Virginia and determines to find out where they are going. In Singapore, Maxon commissions Dr. Carl von Horn to take them the remainder...

The Oakdale Affair is a short contemporary mystery novel by Edgar Rice Burroughs. It was written in 1917 under the working title of "Bridge and the Oskaloosa Kid," and is a partial sequel to The Mucker (1914/1916), Bridge, the protagonist, having been a secondary character in the earlier work.

The Lost Continent is one of the least-known of Burroughs' thrilling science-fiction tales. In the year 2137, civilization has been in decline for nearly two centuries, and war-torn Europe is but a distant memory to the inhabitants of the isolated United States. But an American adventurer rediscovers the Old World, which has become a strange and savage land.

The Land That Time Forgot is a fantasy novel by American writer Edgar Rice Burroughs. The novel is set in World War I and opens with a framing story in which a manuscript relating the main story is recovered from a thermos off the coast of Greenland. It purports to be the narrative of Bowen J. Tyler, an American passenger with his Airedale Terrier Nobs on a ship sunk in the English Channel by a German U-boat, U-33, in 1916. He is rescued by a British tugboat with another survivor, Lys La Rue. The tug is also sunk, but its crew manages to capture the submarine when it surfaces. Unfortunately,...

The Mad King is a Ruritanian romance by "Tarzan" creator Edgar Rice Burroughs, published in two parts as "The Mad King" and "Barney Custer of Beatrice." Set in the fictional European kingdom of Lutha, the protagonist is a young American named Barney Custer, of Beatrice, Nebraska, who is the son of an American farmer and a runaway Luthan princess, Victoria Rubinroth. Unaware of his royal blood, much less that he is a dead ringer for his relative Leopold, the current king of Lutha, Barney visits Lutha on the eve of the First World War to see for himself his mother's native land. As he arrives...

Jungle Tales of Tarzan is a collection of twelve loosely connected short stories written by Edgar Rice Burroughs, comprising the sixth book in order of publication in his series about the title character Tarzan. Chronologically the events recounted in it occur within Chapter 11 of the first Tarzan novel, Tarzan of the Apes, between Tarzan's avenging of his ape foster mother's death and his becoming leader of his ape tribe.

The Efficiency Expert is a 1921 novel by Edgar Rice Burroughs. One of a small number of Burroughs' novels set in contemporary America as opposed to a fantasy universe, The Efficiency Expert follows the adventures of Jimmy Torrance as he attempts to make a career for himself in 1921 Chicago.