Second Stage Lensmen is a science fiction novel by author Edward E. Smith, Ph.D.. It was first published in book form in 1953 by Fantasy Press in an edition of 4,934 copies. The novel was originally serialized in the magazine Astounding beginning in 1941. Second Stage Lensmen is the fifth volume in the Lensman series, and the last to feature Kimball Kinnison as the most powerful Lensman in the service of the Galactic Patrol.