In June 2000, 49-year-old Donald Church faced a daunting battle against cancer, undergoing surgery to remove a tumor from his abdomen. Initially, all seemed to be going well—until one fateful day when he was suddenly struck by excruciating pain. Was his cancer making a terrifying return, or was something even more sinister at play? What his surgeons discovered next would leave you astounded and questioning everything you thought you knew about medical mysteries.