Season 4

Find this man and bring him here, Stead orders Thornton. But the man in question is crossing the Sahara Desert!

Why was Ann Rendell sacked? Izard fights an injustice, but finds himself enmeshed in a sinister operation.

Thornton faces danger in the international power boat race. But for Mogul there are greater risks on shore.

Adesert sheik tries to buy Eileen O'Rourke. But Szabo thinks this is too high a price for an oil concession.

Willy Izard tries to repay a debt to his former boss. But loyalty can cloud a man's judgment - as Willy learns to his cost.

A loan Mogul desperately needs for a new refinery is being blocked by the Bank. Stead thinks that the manager is mentally unbalanced.

Alec Stewart, now chief of the New York office of Mogul, battles with America's oil giants. But has he made a fatal mistake?

Returning to the Sudan arouses forgotten memories for Stead. But Thornton and Eileen are faced with saving a tanker from shipwreck.

Thornton gets involved with gun-runners when he is sent to Europe to find the secret of an African Power struggle.

Mogul strike oil off Scotland. But when Thornton disappears, Stead discovers there can be more problems at home than in the desert.

Personal conflict flares when Stewart and Grandmercy try to carry a dangerous cargo into the Venezuelan Jungle.

Thornton takes a chance in Thailand - and lands Mogul in trouble.

Bad weather causes the collapse of an oil rig in the Caribbean with loss of life. Mogul's problems mount when witnesses say the rig had a major structural problem.

Mogul makes efforts to save a giant tanker aground off Florida with a cargo of 100,000 tons of crude oil. Thornton, acting for Stead, wants to bomb the ship, but Stewart has his own reasons for refusing.