An Italian government agent is assigned to break up a drug smuggling ring on the island of Ischia but his daughter is kidnapped by the gang.

Boris Karloff
as Don Gaetano

Renato Vicario
as Ten. Mario Andreani

Jole Fierro
as Giulia

Patrizia Remiddi
as Fiorella Andreani

Franca Marzi
as Gloria D'Auro

Carlo Duse
as Foster

Giuseppe Chinnici
as Maresciallo Antonio Carcani

Salvatore Scibetta
as Col. Della Finanza

Giulio Battiferri
as Il rapitore

Domenico De Nimmo
as Uomo di Pozzuoli