You can purchase and download the digital EPUB or Kindle version of the book directly from Amazon or find it listed on Goodreads. Daniel Young's Marathon books in order - Fantastic Fiction

Envoy (Marathon Book 9) by Daniel Young is the final installment in the high-octane military science fiction space opera series, concluding the adventures of Captain Adam Eckhart, released on November 28, 2022. The book serves as the ninth entry in the saga.