This gripping true story follows the race against time to solve one of America's deadliest medical mysteries: yellow fever. In 1900, a team of courageous doctors and soldiers volunteers to be infected with the deadly disease in Cuba to prove it's spread by mosquitoes. Through vivid storytelling, readers witness the scientific process, personal sacrifices, and ultimate triumph of medical detective work. The book reveals how bravery and careful experimentation saved countless lives from the 'yellow death.'