The present work is an attempt to compile the knowledge related with intelligence for the readers those are interested to read about a somewhat mysterious subject. The unavailability of such kind of work was a need of the readers interested in the topic. It is expected that present work would help interested readers to enjoy basic propositions about intelligence and psychology under one cover. What is intelligence is defined. Intelligence officers and their duties, places where these officers work, personality and what are the personality features of an intelligence office those facilitate an officer to work in different environments like ‘national security’, ‘military’, ‘defense’, ‘law enforcement’ and in ‘governance and compliance’ discussed. How psychology could assist intelligence fields have also been focused? Some interesting facts about intelligence agents also highlighted. Some recommendations about psychology of crime are also the part of the book. Moreover this book would be important for those who are interested to know about these topics. It is expected that the book may catch the attention of people related with various defense and other relevant establishments.