This novel continues where the previous one in the series, The Gods of Mars abruptly ended. At the end of the previous book, John Carter's wife, the princess Dejah Thoris, is imprisoned in the Temple of the Sun by the vile pretender goddess Issus. It is said one has to wait an entire Barsoomian year before the room the prisoner is in revolves back to the entrance.

The People That Time Forgot is a direct sequel to The Land That Time Forgot and continues the lost world saga begun in the earlier story. Burroughs continues 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 stories.

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.