This work investigates the catastrophic demographic collapse of Indigenous populations in the Americas following European contact, specifically focusing on the role of introduced diseases. David E. Stannard, a scholar of American studies and genocide, utilizes historical records, epidemiological data, and colonial accounts to argue that the spread of pathogens was not merely an accidental byproduct of contact but a central mechanism of colonial expansion. He challenges traditional narratives that minimize the scale of pre-contact populations and the intentionality behind the resulting devastation.

Scholars and historians recognize this text as a significant contribution to the study of colonial-era demographics and the ethics of historical interpretation. Readers frequently note the dense, analytical nature of the prose and the author's uncompromising stance on the scale of human loss.