Invaders from the Infinite is the 1961 sci fi novel by John W. Campbell, Jr. and is an expansion of stories that originally appeared in the magazine Amazing Stories Quarterly. Invaders from the Infinite is the third volume of John Campbell's Arcot-Morey-Wade science fiction series, following The Black Star Passes and Islands of Space chronicling the adventures of the three young scientist-inventors as they almost single-handedly save the Earth, Venus, people of another galaxy and most of the known Universe. Whatever comes along, Arcot, Morey, and Wade take the lead in producing new inventions...

Islands of Space, the second book in the Arcot-Morey-Wade science fiction series (The Black Star Passes, Islands of Space, Invaders from the Infinite) by John W. Campbell, Jr.. It continues the adventures of the three young scientists after helping to resolve a global war on Venus. Their own inventions along with research on Venusian and Nigran scientific advances lead to interesting new capabilities - and boredom: "The war was over. And things became dull. And the taste of adventure still remained on the tongues of Arcot, Wade, and Morey." Be assured that they find more adventure in Islands...

A sky pirate armed with superior weapons of his own invention.... First contact with an alien race dangerous enough to threaten the safety of two planets....The arrival of an unseen dark sun whose attendant marauders aimed at the very end of civilization in this Solar System.... These were the three challenges that tested the skill and minds of the brilliant team of scientist-astronauts Arcot, Wade, and Morey. Their initial adventures are a classic of science-fiction which first brought the name of their author, John W. Campbell, into prominence as a master of the inventive imagination.

"I am the last of my type existing today in all the Solar System. I, too, am the last existing who, in memory, sees the struggle for this System, and in memory I am still close to the Center of Rulers, for mine was the ruling type then. But I will pass soon, and with me will pass the last of my kind, a poor inefficient type, but yet the creators of those who are now, and will be, long after I pass forever. So I am setting down my record on the mentatype." What will the final evolution be, and will we recognize it when it arrives? A thought provoking story on the ultimate destination of all...