The Innocents were an alleged gang of outlaw road agents in Montana Territory who operated during the gold rush of the 1860s, preying on shipments and travelers carrying gold from Virginia City, Montana. According to the early chronicler Thomas Dimsdale, the gang attempted to steal gold while it was being transported; they killed many travelers who resisted. Sheriff Henry Plummer of Bannack, Montana was accused of leading the group, and was executed by a group of vigilantes from Virginia City in January 1864, along with several other alleged gang members.

Henry Plummer was a prospector, lawman, and outlaw in the American West in the 1850s and 1860s, who was known to have killed several men. He was elected sheriff of what was then Bannack, Idaho Territory, in 1863 and served until 1864, during which period he was accused of being the leader of a "road agent" gang of outlaws known as the "Innocents," who preyed on shipments from what was then Virginia City, Idaho Territory to other areas. In response some leaders in Virginia City formed the Vigilance Committee of Alder Gulch and began to take action against Plummer's gang, gaining confessions from a couple of men they arrested in early January 1864. On January 10, 1864, Plummer and two associates were arrested in Bannack by a company of the Vigilantes and summarily hanged. Plummer was given a posthumous trial in 1993 which led to a mistrial. The jury was split 6–6.