  Black holes, initially thought of as very interesting geometric constructions
of nature, over time, have learnt to (often) come up with surprises and
challenges. From the era of being described as merely some interesting and
exotic solutions of \gr, they have, in modern times, really started to test our
confidence in everything else, we thought we know about the nature. They have
in this process, also earned a dreadsome reputation in some corners of
theoretical physics. The most serious charge on the black holes is that they
eat up information, never to release and subsequently erase it. This goes
absolutely against the sacred principles of all other branches of fundamental
sciences. This realization has shaken the very base of foundational concepts,
both in quantum theory and gravity, which we always took for granted. Attempts
to exorcise black holes of this charge, have led us to crossroads with
concepts, hold dearly in quantum theory. The sphere of black hole's tussle with
quantum theory has readily and steadily grown, from the advent of the Hawking
radiation some four decades back, into domain of quantum information theory in
modern times, most aptly, recently put in the form of the firewall puzzle. Do
black holes really indicate something sinister about their existence or do they
really take the lid off our comfort with ignoring the fundamental issues, our
modern theories are seemingly plagued with? In this review, we focus on issues
pertaining to black hole evaporation, the development of the information loss
paradox, its recent formulation, the leading debates and promising directions
in the community.
