Charles Williams is not as well known today as his fellow Inklings CS Lewis and JRR Tolkien. But his work influenced theirs, and that of other writers like TS Eliot. The first of his supernatural thrillers, War in Heaven (reviewed here), opens like a detective story with a dead body, and closes like a mystical experience with another one, along the way including Christian themes and a quest focused on an object of great power. It joins the US public domain in 36 days. #PublicDomainDayCountdown