Although a little dry in places, this book provides a good academic analysis of the development of interrogation techniques, both for law enforcement and for military intelligence, in addition to the effects coercion and even outright torture has on the interrogation process from both pragmatic and ethical perspectives before finishing off by examining negotiation techniques used in the corporate world and how to adapt them for use in non-business environments.
All in all, despite the length and in some cases protracted prose, the book was an excellent and insightful read.