The spoilers - Desmond Bagley

A wealthy tycoon swears to avenge the death of his daughter and finances a personal expedition - to kill the Middle Eastern drugs barons who cultivated the heroin that killed her

When film tycoon Robert Hellier loses his daughter to heroin, he declares was on the drug pedlars - not on the pushers, but on their bosses, the faceless men whose greed supplies the world with its deadly pleasures. London drug specialist Nicholas Warren is called in to organize and expedition to the Middle East to track down the drug overlords - and no expense is spared planning their destruction. But with a hundred million dollars' worth of heroin at stake, Warren knows he will have to use methods as deadly as his prey