India's foremost tiger specialist Dr. Ullas Karanth, who has studied wild tigers for over 15 years, takes us on a journey into their secret world, bringing a unique combination of practical experience, deep commitment, and scientific background to this up-to-date study, illustrated by some of the world's leading wildlife photographers. We begin by looking at how humans have interacted with tigers from pre-historic to modern times. He examines how methods of modern science have helped us replace traditional tiger myths with reliable knowledge. We learn how tigers evolved, and how they radiated across snow bound Russia to the dry forests in India, from the reed beds of Iran to rain forests of Indonesia, only to be constricted again as a result of human activities like agriculture, hunting and economic development. He explores how the tiger's biology is adapted to its predatory lifestyle, and determines which ecological factors drive tiger populations. We understand why even though tigers are solitary, they are not alone: how they find each other, reproduce, raise cubs and die. Finally, we learn that although the challenges of saving wild tigers are indeed formidable, they can be overcome through passionate commitment combined with rational, timely action.