In the summer of 2013, Lawrence Crowder Davis and his wife Joanna were having the time of their lives. Blessed with grandchildren, great friends, and a solid marriage, things seemed as though they couldn't possibly get any better-but all it took was one diagnosis, and they suddenly became much, much worse.

For two hundred days, Davis's life was plunged into darkness as he battled a formidable enemy: squamous cell carcinoma of the neck. Through months of testing and treatments, his existence became a desperate struggle for survival. But with the love of his life by his side, he managed...