The Most Reluctant Convert: The Untold Story of C.S. Lewis is a 2021 British biographical drama film written and directed by Norman Stone, based on the 2016 stage play, C.S. Lewis on Stage: The Most Reluctant Convert, by Max McLean. It is about the life and conversion of British writer, lay theologian, and Christian apologist C. S. Lewis, author of The Chronicles of Narnia series. The film stars McLean, Nicholas Ralph, Eddie Ray Martin, Richard Harrington, Amy Alexander, and Tom Glenister.