The Final Solution by Michael Chabon
This is an unexpected Sherlock Holmes tale. The great detective is well into advanced old age and fears dementia. His interest in life is rekindled by a mute Jewish boy who has been evacuated to England during the war. A man is murdered, and the boy’s parrot, which attracted attention for spewing mysterious strings of numbers, is missing. Will the elderly Holmes be capable of solving one last mystery? Beautifully written and skillfully narrated.