Might be an interesting read.
BTW, the Amazon US link on the author's page is bogus. It links to the US edition but on the Amazon UK site. These link to the US edition on Amazon's US side is: http://www.amazon.com/Capturing-Ligh...us+and+Rivalry
The blub writer sure knows how to spin a story to build tension. The blub reads like one for an action novel. In truth, the two weren't "two lone geniuses". Daguerre built on the work of Nicéphore Niépce, a man he worked with during the latter's final years. Niépce had produced the first permanent photograph, which is at a museum at the University of Texas, some three years before he began his collaboration with Daguerre. Daguerre's contribution was to make the process reliable and marketable.
Fox-Talbot was somewhat of an experimental loner, though he did discuss his experiments with friends and incorporated components from some of their earlier works and the work of others.
It is interesting the competition that began after the development of the processes. From their first public announcement the race began to patent and promote the somewhat rival processes. It is interesting that while the Dagerreotype was much more successful than the Talbot-type and Calotype it left no photographic descendants. The later processes almost all decend from Talbots work.