A gripping title and project, much metaphysical rigour, and some underdeveloped epistemology. That is what Keith Hossack has given us. The title of his book trails a bold scent, guaranteed to entice those of us who wander within metaphysics and epistemology. Combine those areas, and excitement beckons. This book's beguiling title suggests a goal of uncovering the metaphysical microstructure of knowledge itself. Not in this case, though, emphatically not. Hossack's metaphysics of knowledge analyses a multitude of concepts other than that of knowledge, with each of these somehow featuring the latter -- which itself remains unanalysed. Hossack's apparent aim (even.