Otis Kline: 49 books

Jan goes to India on a new Adventure!

In Swordsman of Mars, Harry Thorne, outcast scion of a wealthy East Coast family, seeks the greatest adventure of his life. He exchanges bodies with his look-alike, Martian Sheb Takkor, and is transported millions of years into the past to a Mars peopled with mighty warriors, beautiful women, and...

IT all comes back to me as I take up my pen—a horrid shriek of pain and terror from high in the air, an enormous thing, taller than a tree, silhouetted against a background of lightning-illuminated storm clouds, like some gigantic tumble-weed, striding over the jungle, walking on its branches. And...

The Age of Miracles produces an amazing suicide and a triumphant return from death. A million dollar prize is offered—and won—for the most perfect automation.

Silently, without warning they came,those fishermen of deep space who spread their net for man—living flying saucers the Earth must destroy—yet who multiplied by dying!

UNCLE JIM was dead. I could scarcely believe it, but the little yellow missive, which had just been handed to me by the Western Union messenger boy, left no room for doubt. It was short and convincing: COME TO PEORIA AT ONCE. JAMES BRADDOCK DEAD OF HEART FAILURE. CORBIN & ILLIS, ATTORNEYS. I should...

Through the discoveries of the scientist, Dr. Morgan, a young Martian's astral body is projected into the body of one Harry Thorne on Earth, and from Earth to Venus, or "Zarovia," where the man of Mars becomes Prince Zinlo of the mighty empire of Olba. Zinlo is instructed by Morgan's fellow-scientist...

A man from Earth goes to Mars, and discovers a violent civilization complete with monsters, people, and other Earth-like creatures.

I TELL you, Evans," said Dr. Dorp, banging his fist on the arm of his chair for emphasis, "the science of psychology is in much the same stage of development today as were the material sciences in the dark ages." "But surely," I objected, "the two centuries of investigation...

Fred Jorgeson, the Human Fly, Could Scale Anything—Even the Walls of Time!

Derring-do on a world of primitive monsters! When Robert Grandon swapped bodies with a prince of the planet Venus, he was concerned only with the thrill and interest of living on a different world. But the situation he found himself in was hardly that of a leisurely sightseer. Instead, he found himself...

Smaller than a microbe, the Stranger was—but how he grew! Ralph Blake's surprise kidnapping flung him into fierce adventure in the torrid Sahara. Then a strange creature from Mercury stepped in—and even Ralph's death couldn't prevent him from unraveling the network of intrigue! 

Scientists and inventors have made enormous strides for-and in many ways, against-humanity, for they have discovered and invented powerful destructive materials-in that way sometimes courting their own destruction. So many "impossible" things have been done, why is it not possible that the...

Grandon embarks on a perilous search for a missing royal daughter and a port filled with pirates. This is the 3rd book in the Planet of Peril series.