In the Nazi occupied city of Rome, an assault on an SS brigade draws retaliation from the military governship. "Massacre in Rome" is the true story of how this partisan attack led to the mass execution of Italian nationals under the orders of SS-Lieutenant Colonel Kappler.

Richard Burton
as SS-Obersturmbannführer Herbert Kappler

Marcello Mastroianni
as Father Pietro Antonelli

Peter Vaughan
as Field Marshal Albert Kesselring

Leo McKern
as Gen. Kurt Maelzer

John Steiner
as SS-Standartenführer Eugen Dollmann

Anthony Steel
as SS-Sturmbannführer Domizlaf

Robert Harris
as Father Pancrazio

Anthony Dawson
as SS-Brigadeführer Wilhelm Harster

Guidarino Guidi
as Interior Minister Guido Buffarini Guidi

Renzo Montagnani
as Police Chief "Questore" Pietro Caruso