International man of mystery Diabolik and his sensuous lover Eva Kant pull off heist after heist, all while European cops led by Inspector Ginko and envious mobsters led by Ralph Valmont are closing in on them.
A leftist professor wants the truth about two men killed during a hunting party; but the mafia, the Church and corrupt politicians don't want him to learn it.
An imprisoned murderer carries out a violent bid for control of Naples' underworld crime syndicate.
