Tracing the global heroin trade, from growers via smugglers to users.

Fazal is forced to Karachi after his lucrative poppy fields are destroyed; in Germany, Helen ponders her husband's arrest.

Fazal's family is not convinced that life in Karachi is better than life on the North West Frontier; Jack tries to head off a threatened customs strike.

Fazal supervises the conversion of the opium crop into heroin; Karl's trial begins; Helen plans the unthinkable.

Jack returns to Pakistan with radically different views than those held on his last visit; Ulli swears to avenge Dieter's death.

Fazal is put in prison; Ulli believes he has uncovered Helen's smuggling route; Jack returns from Pakistan to discover Caroline has disappeared.