In the third week of January 1909, southern New Jersey experienced a mass panic centered on the Jersey Devil. Between January 16 and January 23, hundreds of people across more than thirty communities reported sightings of a strange, winged creature, and the Pine Barrens region was gripped by genuine terror. The wave began in Woodbury, where a man reported seeing a flying creature with glowing eyes perched on his roof. Over the following days, sightings exploded across Burlington, Camden, Gloucester, and Atlantic counties. In Bristol, Pennsylvania, across the Delaware River, police officer James Sackville fired at the creature as it flew past him. In Camden, a creature matching the Jersey Devil's description allegedly attacked a social club. In West Collingswood, the fire department turned hoses on a creature they spotted on the roof of a building. Schools closed, factories shut down, and workers refused to leave their homes. Posses armed with shotguns patrolled the Pine Barrens. Hoofed tracks appeared in the snow across yards, on rooftops, and leading in and out of fields. The tracks crossed fences, railroad tracks, and the Delaware River itself. By the end of the week, the sightings had subsided, and newspapers began to speculate about mass hysteria. The 1909 flap remains the most concentrated outbreak of Jersey Devil activity ever recorded and cemented the creature as New Jersey's defining folk legend.