Letters to Malcolm: Chiefly on Prayer (1964)

The last book Lewis wrote, published two months after his death. In it,
Lewis returns to the epistolary conventions he used earlier in The Screwtape Letters.
Here, Lewis corresponds with an imaginary Malcolm, who supposedly
was a close, long-time friend.

• Discussed in Schakel, Reason and Imagination in C. S. Lewis

Annotations and Study Guide to Letters to Malcolm