Ruggero Salvadori

A detective gets involved with the beautiful daughter of an old friend. The daughter turns out to be a jewel thief, who in turn gets the detective involved in a caper in Austria.

E.C.H.O., a secret organization with a strange name masterminds a bizarre plot to take over the world by dosing important `nerve centers' with super potent LSD. The only man who can stop them is Rex, a secret agent working for an undisclosed organization.

A former counterrevolutionary pirate befriends a mentally ill young woman and this in turn leads to tragedy when she falls in love with a French naval officer.

Clive Norton is a young captain ordered by his superior to recover two shipments of stolen army payroll gold. Clive enlists the help of Ted Hunter, a condemned prisoner whom he has released. They soon discover that two different gangs are responsible for the robberies...

A young European, Diego Medina (Carvell), joins the Mexican revolution and becomes a courier for Pancho Villa. He is captured and tortured by the Federales but escapes to the desert where he meets and joins a bandit named Malpelo (Fajardo) and his gang.