After years of living with mysterious symptoms, a young girl from Brooklyn and a Duke University scientist are diagnosed with a disease said to not exist: Chronic Lyme disease. Their search for answers lands them in the middle of a vicious medical debate. What begins as a patient story evolves into an investigation into the history of Lyme disease, dating back to its discovery in 1975. A paper trail of suppressed scientific research and buried documents reveals why ticks—and the diseases they carry—have been allowed to quietly spread around the globe.