Architectural practice requires the integration of often complex technical construction requirements with an equal measure of empathy for the occupants of the spaces we envision. In the deceptively simple pen-and-ink drawings and tiny photographs presented in this book we find technical information and human empathy in tension, an inevitable outcome wherever architecture is called upon to oppress living beings. This slim book does not only contain more detail of the architecture of detention centres than some scholarly works on the architecture of incarceration, but it begins to outline the invisible experience of hidden-away people in hidden-away places.