Gian Maria Volonté as Bartolomeo Vanzetti

Riccardo Cucciolla as Nicola Sacco

Cyril Cusack as Frederick Katzmann

Rosanna Fratello as Rosa Sacco

Geoffrey Keen as Judge Webster Thayer

Milo O’Shea as Fred Moore

William Prince as William Thompson

Claude Mann as Eddie

Edward Jewesbury as Alvan T. Fuller

Armenia Balducci as Virginia Vanzetti

Valentino Orfeo as Celestino Madeiros

Pier Giovanni Anchisi as Defense Committee member

Desmond Perry as Lieutenant

John Harvey as Minister Palmer

Felicity Mason as

Marisa Fabbri as Mary Splaine

Claudio Sora as Joe Morelli

Maria Grazia Marescalchi as Brini

Giacomo Piperno as Pelser

Sergio Fantoni as Consul Giuseppe Andrower

Sergio Serafini as

Giorgio Dolfin as

Armando Tortorici as (uncredited)

Mario Ingrassia as Court Officer (uncredited)

Osvaldo Peccioli as Court Stenographer (uncredited)