Paulette Goddard
Lucretia Borgia
Acting
John Lund
Alfonso D'Este
Acting
Macdonald Carey
Cesare Borgia
Acting
Albert Dekker
Vanetti
Acting
John Sutton
Prince Bisceglie
Acting
Raymond Burr
Michelotto
Acting
Donald Randolph
Tiziano
Acting
Charles Dayton
Bastino
Acting
Anthony Caruso
Captain of the Guard
Acting
Dick Foote
Negligent Sentry
Acting
William Farnum
Conti Peruzzi
Acting
Kate Drain Lawson
Gemma
Acting
Nicholas Joy
Chamberlain
Acting
Fritz Leiber
Filippo
Acting
Rose Hobart
Lady Eleanora
Acting
Douglas Spencer
False Physician
Acting
Nestor Paiva
Mayor
Acting
Frank Puglia
Bolfi
Acting
Houseley Stevenson
Councillor
Acting
Robert Greig
Councillor
Acting
Don Beddoe
Councillor
Acting
Ian Wolfe
Councillor (uncredited)
Acting