This is a book about reading - not just casual reading, but a considered form of reading employing techniques not unlike those of Sherlock Holmes himself.
The author takes a sample of the Holmesian Canon and subjects them to careful analysis to come up with sometimes surprising results. Atkinson describes his readings as "eccentric", a view which I must support. By drawing parallels between the stories and a variety of literary, pop cultural and religious matters, some far better known than others, Atkinson reveals sidelights on well-known stories which should delight many readers.
The book would be of interest to students of literary criticism or ardent Holmesians, and especially to those who are both.
My view: a good and stimulating read that encouraged me to re-read old favouites.