In the book "Demon in the Freezer: A True Story," Preston reveals just how narrowly the world avoided the eruption of a global biological warfare during the past century. He does so through retelling, with a god's eye view, the experiences of those who were prominently involved with the threat's growth and decline. He gets into the heads' of victims, public policy makers, and scientists alike, revealing their thoughts as a global conspiracy involving the production of genetically enforced contagion surfaces and enraptures them.
Preston primarily follows Peter Jahrling, DA Henderson, Lisa Hensley, and several others who played critical roles in the eradication of smallpox and containment of other lethal microorganisms. He follows them into American laboratories and into private discussions in Russia. Besides illustrating their roles in the fight against modern biological warfare, he also delves into their personal lives, revealing the driving beliefs and distinct personality quirks. Be warned, the book's attention on this geographically distinct subset of individuals manifests Preston's political biases. Preston recounts their experiences with such clarity and assurance that I couldn't help but feel that the book was crossing into the realm of sensation.
From the US's discovery that the Russian Zagorsk Virological Center produced 20 tons of weapons-grade smallpox to Lisa Hensley's slipping scissor incident while working with the ebola virus, events Preston includes in "Demon" consistently emanate the tension between the world's polarized political environment at the times they took place. This tension sustains in "Demon" at a consistently high level from beginning when the dangers of biological warfare are introduced to the 'resolution' at the end. As a result however, hard facts and figures of the often gets lost amidst the suspense, further questioning the credibility of "Demon's" categorization as non-fiction.
Ultimately, I felt like I was reading a Tom Clancy novel rather than a historical non-fiction. Whether this is a strength or weakness of "Demon" depends on readers' preferences.