This work investigates the clandestine negotiations at Plombières-les-Bains in 1858 and their role in catalyzing the Italian Risorgimento. The authors, Mack Walker and T. Stuart Walker, utilize primary diplomatic correspondence and archival records to reconstruct the meeting between Napoleon III and Camillo di Cavour. They argue that this secret pact served as the essential geopolitical framework for the subsequent military conflicts that unified the Italian peninsula.

Historians recognize this text as a specialized study of nineteenth-century European statecraft. Scholars frequently note the academic rigor of the authors' analysis regarding the complex motivations behind the secret diplomacy of the era.