An American pilot assists the Portuguese colonial police who are battling a gang of criminals involved in drug smuggling from Lisbon to Mozambique to Zanzibar.

A former district officer is assigned to work on a team of diamond prospectors, who are busy double crossing each other until they are blown up having found bullion.

The first victim is the butler of South African millionaire Wexler, who hires hard-hitting private eye Steve Martin for protection. Once at Wexler’s palatial Cape Town estate, Martin meets the…