Narcotics agent Dennis goes undercover in the Mediterranean Islands to investigate a smuggling operation, and gains the confidence of a woman who works for the ringleader. But Dennis ends up arrested for murder when the crime boss turns up dead.

• Associated British-Pathé
• Warner-Pathé Distributors
• Mark Burns
• Shaun Curry
• William Dexter
• Wanda Ventham
• Terence de Marney
• Mark Singleton
• Michael Brennan
• Blake Butler