Search Worlds Without End

Contains both The House of Many Worlds (1951) and Three Faces of Time (1955).

THE CLASSIC OF ALTERNATE EARTHS!

Ancient, encrusted with legend, supposedly empty, the old mansion on Spindrift Key stood like a dark and lowering wraith. Reporter Elspeth Marriner's nose for news leads her into a world of trouble. Make that, in worlds of trouble. When she and photographer Mack Fraser, the man she loves to hate, are sent to investigate the old mansion in the Hatteras, they never dream that once inside their lives will never be the same. For the house is a gateway to alternate Earths, watched over by a mysterious group called the Workers, who guard against more advanced civilizations crossing the dimensional barriers to conquer defenseless neighbors. From the Workers, Elspeth learns that her and Mack's presence at the house is no accident. They have been personally selected by the Workers for a dangerous assignment. Their unique combination of talents and knowledge are needed to counter a threat that could plunge the entire world into war. If Elspeth accepted the assignment, she would have to cross to another world, aided only by her native ingenuity, then surmount a succession of plots and counterplots, with death the price of failure. Worse, she would have to work more closely than ever with the detested Mark Fraser.

Due to his research into the lives of geniuses, Dr Julius Conrad of the Wellington Institute for the Study of the Humanities has developed a radical hypothesis: Namely, that the work of most geniuses, past and present, has been directed by minds from a ruthless future which take possession of either the unstable geniuses themselves or else of unstable people who are in a position to change the course of the geniuses' work. When Conrad is murdered on the eve of announcing his theory, journalist Henry Sanford and the Institute's brainy Liza Drew investigate. Soon the pair discover their own lives are in jeopardy, for the people of the future are determined that no one of our era will ever reveal their existence or the role they play in human history.

TO SAVE THE WORLD, THEY PLOTTED TO WIPE OUT ALL MALES!

This science fiction classic begins when Larry Finlay, a young and unsuspecting chemist, discovers sinister forces have taken an interest in his new approach to the seemingly innocuous problem of hemophilia. Soon, Finlay is unwittingly caught up in a nightmare plot of violence and counter-violence. Behind it is the sinister cabal that calls itself The White Widows. But who are what are they? When Larry learns all these events are tied in to the concept of parthenogenesis, he realizes that a certain woman scientist has found the secret of giving birth without the need of males. She and the other White Widows are determined to end war, greed, violence, poverty, and the idea of cut-throat competition by eliminating all men! Particularly the man named Larry Finlay! The only person he can turn to for help is the woman he loves. If he can trust her with his life... And he'll have to!