The Molly Maguires

The film is set in Pennsylvania in 1876 and is based on real events. "Molly Maguires" is a secret society of Irish immigrants who fight against the mine owners. The owners hire a detective to secretly infiltrate the ranks of the rebels and expose their leaders. The leader of the "Molly" group, Jack Kehoe, tries to break the newcomer, but the latter passes the tests and moves closer to his goal...