Antebellum secret societies ranged politically from those with progressive or even revolutionary agendas to those that pursued conservative or oppressive goals. This book shows how, in the years leading up to the Civil War, these clandestine organizations exacerbated existing sectional tensions in the United States. Lause's research indicates that the pervasive influence of secret societies may have played a part in key events such as the Freesoil movement, the beginning of the Republican party, John Brown's raid on Harpers Ferry, Lincoln's election, and the Southern secession process of 1860-1861.

This exceptional study encompasses both white and African American secret society involvement, revealing the black fraternal experience in antebellum America as well as the clandestine operations that provided assistance to escaped slaves via the Underground Railroad. Unraveling these pervasive and extensive networks of power and influence, A Secret Society History of the Civil War demonstrates that antebellum secret societies played a greater role in affecting Civil War-era politics than has been previously acknowledged.