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 Burtonas SS-Obersturmbannführer Herbert Kappler
Marcello Mastroiannias Father Pietro Antonelli
Peter Vaughanas Field Marshal Albert Kesselring
Leo McKernas Gen. Kurt Maelzer
John Steineras SS-Standartenführer Eugen Dollmann
Anthony Steelas SS-Sturmbannführer Domizlaf
Robert Harrisas Father Pancrazio
Anthony Dawsonas SS-Brigadeführer Wilhelm Harster
Renzo Montagnanias Police Chief "Questore" Pietro Caruso
Marcello Gatti