NR | 1h 13min | Drama | 3 November 2021 (UK) In adapting Max McLean’s stage play “C.S. Lewis Onstage: The Most Reluctant Convert,” director Norman Stone resisted the temptation to add any filler and as a result the running time is a scant 73 minutes which might leave some viewers feeling a tad cheated. What Stone’s film might lack in…