Public domain. Cover image from Project Gutenberg ebook #72615. The sane men of Satan by Jr. Sam Merwin Download .m4b · 140 MB How to listen → · Problem with this narration? Let us know → Narrator Walter — American Narrator (en-US) Length 2 hr 18 min Language English Added November 4, 2026 Source ebook Project Gutenberg License Public domain FictionScience Fiction