The Beacon to Elsewhere

Published in 1963, 'The Beacon to Elsewhere' by James H. Schmitz is a science fiction novel that explores a conspiracy surrounding the theft of Ym-400, a substance capable of manipulating space-time. The story follows Lieutenant Frank Dowland of the Interstellar Police Authority as he investigates the implications of this theft amidst a backdrop of political intrigue involving rebels and alien entities. The narrative combines suspense and exploration of the unknown, making it a notable work in the genre of time travel fiction.