It is hard not to read this book without Rudyard Kipling's Kim in mind. Indeed, some of the Indian characters who "spied" for the Raj and whose exploits are so thoroughly researched and absorbingly told in this book were the basis of Kim and his supposedly fictional antics. Of course the derring-do is rather less pronounced than in the fictional account, and so it should be. For the most part the Pundits' travels were long, arduous and solitary. What really comes across is the real hardships suffered by the so-called Pundits who mapped out the Himalayas for the British in the 19th Century often for very little reward, and how their British masters barely gave them credit or even, in some cases, just recompense.
Written by a journalist, this short book (185 pages) is a very readable and is an enlightening account of some truly remarkable Indian characters, all of them completely forgotten by history despite their real contribution to Raj geopolitics. For me, thought, it is thin on historical context, being very perfunctory on the Great Game and the geopolitics of the era. Providing more explanation of the threats and "enemies" of the time would have helped me understand what was at stake and would have certainly heightened the narrative of the truly extraordinary men whose story is told here.