Calificación
Reparto

Charles Laughton
Tiberius Claudius (archive footage)

Robert Graves
Interviewee [original author]

Josef von Sternberg
Interviewee [director] / Himself (archive footage)

Merle Oberon
Interviewee / Messalina (archive footage)

Flora Robson
Interviewee / Livia (archive footage)

Emlyn Williams
Interviewee / Caligula (archive footage)

Eileen Corbett
Interviewee [script girl]

John Armstrong
Interviewee [costume designer]

Dirk Bogarde
Narrator

John Abbott
Himself – Ms. Robson's Host (uncredited)

Robert Newton
Cassius, Captain of Caligula's guard (archive footage; uncredited)

Basil Gill
Xenophon, Claudius' doctor (archive footage; uncredited)