Syracuse lies between the warring nations of Rome and Carthage; as long as the balance of power between the nations remains intact, both nations are willing to preserve the neutrality of Syracuse. However, Rome has now gotten the upper hand in its struggle for power. The fate of Syracuse lies in the hands of its leader, the famed inventor and scientist Archimedes.
Rossano Brazzi
as Archimede
Tina Louise
as Diana / Artemide / Lucrezia
Sylva Koscina
as Clio
Enrico Maria Salerno
as Gorgia
Gino Cervi
as Gerone
Alberto Farnese
as Marcello
Luciano Marin
as Marco
Alfredo Varelli
as Kriton
Walter Grant
as Tiresias
Mara Lombardo
as Selinonte Dancer
Corinne Capri
as Girl in Troupe (uncredited)
Enzo Cerusico
as Giovane allievo (uncredited)