An Interpol agent goes to Lebanon supposedly on vacation and washes up dead on a beach soon after. The official verdict is that he drowned in a diving accident. Yet Stewart, who was a friend of his, does not believe in 'accidents' and demands that the Department investigate.Since Sir Curtis feels that Stewart is too emotionally involved, he sends Jason to Beirut to look into the matter. Yet Jason becomes too emotionally involved, too - with a woman - and soon his cover is about to be blown... Stewart confronts Sir Curtis with an ultimatum, and finally he lets Stewart and Annabelle go to Lebanon, where they reunite with Jason and face an international drug cartel...