The Hunter and his quarry raced through space—when suddenly both ships crashed head on into one of the oceans of earth! Both the Hunter and his quarry were symbiotes—creatures who had to live within the body of another organism. When the Hunter emerged from his wreck of a ship, he soon realized that a man of earth would make a suitable host. It became obvious, too, that his quarry had already selected his host—but which human being. Then the Hunter found an excellent host in the person of young and intelligent Robert Kinnaird. He made his presence known and, in return for some clever suggestions and help with his search, he helped Robert with his problems. There follows an exciting, excellently wrought, and—you will agree—absolutely unique chase and deduction story. Tense, dramatic, and humorous, too, it's a top-drawer tale of scientific ingenuity. — From the dust jacket Originally published in Astounding Science Fiction. Also published as From Outer Space, followed by a sequel: Through the Eye of a Needle

IN SEARCH OF A CURE Time was running out for Bob Kinnaird. without much warning, the Hunter—the green protoplasmic alien that lived inside him and cured all his ills—had suddenly become his destroyer. Day by day Bob grew weaker and weaker, but only specialists from the Hunter's distant world would know what was wrong with him and, more important, how to save him. But the only way searchers from his planet could find him was to locate his missing spaceship... a spaceship that had crashed beneath the ocean years before, its location still very much a mystery. Once again leading an investigation in a race against time—as he had done so many years before—the Hunter knew he had to find comrades and find them fast... before someone murdered his best friend.