Children of the lens by E. E. Smith

"Children of the Lens" by E. E. Smith is a science fiction novel first serialized in 1947 and published in book form in 1954. The final installment of the Lensman series follows five extraordinary siblings—the Kinnison children—who represent the culmination of a two-billion-year breeding program. Born with superhuman mental abilities that surpass even their legendary Lensman parents, these "Third Stage Lensmen" must confront the ancient Eddorian threat. As terrorist attacks plague two galaxies, the children discover their true purpose in an epic battle that will determine Civilization's fate. (This is an automatically generated summary.)