Bruce Edwards, a professor of English at Bowling Green State University and a C.S. Lewis scholar, will discuss "The Spiritual World of Narnia" at 7 p.m. tomorrow at Borders Books & Music, 5001 Monroe St., in Westfield Franklin Park. Two of Edwards' books on the subject have been published this month: 'Not-a-Tame Lion: Unveiling Narnia through the Eyes of Lucy, Peter, and Other Characters Created by C.S. Lewis' (Tyndale) and Further Up and Further In: Understanding C.S. Lewis' 'The Lion, the Witch, and the Wardrobe.'' (Broadman and Holman) Edwards will sign books after the free lecture.