Steffanie Strathdee is an infectious disease epidemiologist, and Associate Dean of Global Health Sciences and Professor and Harold Simon Chair at the University of California, San Diego, School of Medicine. She also directs the new UC San Diego center for Innovative Phage Application and Therapeutics and is an Adjunct Professor at Johns Hopkins and Simon Fraser Universities. She has been named one of Time's 50 Most Influential People in Health Care. Thomas Patterson is an evolutionary sociobiologist and an experimental psychologist. A Distinguished Professor of Psychiatry at UC San Diego, he has renowned expertise on behavioral interventions among HIV-positive persons and those at high risk of acquiring HIV and sexually transmitted infections. Dr. Patterson and Dr. Strathdee have worked as husband-and-wife AIDS researchers on the Mexico-US border for over a decade. The Perfect Predator is their first book together.