Bartolomeo Vanzetti

Gian Maria Volonte

Nicola Sacco

Riccardo Cucciolla

Frederick Katzmann

Cyril Cusack

Rosa Sacco

Rosanna Fratello

Fred Moore

Milo O'Shea

Judge Webster Thayer

Geoffrey Keen

William Thompson

William Prince

Eddie

Claude Mann

Alvan T. Fuller

Edward Jewesbury

Virginia

Armenia Balducci

Celestino Madeiros

Valentino Orfeo

Lewis Ciannelli

Defense Committee member

Pier Giovanni Anchisi

State Defense Committee Member

Piero Anchisi

Lieutenant

Desmond Perry

Minister Palmer

John Harvey

Felicity Mason

Mary Splaine

Marisa Fabbri

Joe Morelli

Claudio Sora

Brini

Maria Grazia Marescalchi

Paul Sheriff

Pelser

Giacomo Piperno

Anthony Stergar

Consul Giuseppe Andrower

Sergio Fantoni

William Kenn

Sergio Serafini

John Gray

Giorgio Dolfin

(uncredited)

Armando Tortorici

Court Officer (uncredited)

Mario Ingrassia

Giorgio Dolfini

Court Stenographer (uncredited)

Osvaldo Peccioli

Giorgio Paoletti

Franco Odoardi

Raimondo Penne

McCallum

Carlo Sabatini

Raffaele Triggia

Page Jones

Romano Moschini

Charles Crowder

Riccardo Ventura

Francesco Conversi

Luchiano Palermo