The Broad Street cholera epidemic of 1854 in Victorian London was spreading like wildfire. No one knew how to stop it or how it had suddenly ambushed the Soho neighborhood seemingly out of nowhere. The epidemic was devastating and claimed 600 victims even though it lasted only a week. Dr. John Snow was determined to find the source and cause of the epidemic. He and curate Henry Whitehead joined forces to prove Snow’s waterborne theory and uncover the epidemic’s patient zero.