An oil find in Scandinavia brings problems for Mogul, and a new man poses a threat to Stead.
The threat to Stead becomes reality as Langley takes up his post as Deputy Chairman and Willy Izard reaches the end of the road.
Trouble in the Peruvian Andes for Thornton in the shadow of the Spanish Conquistadores brings Langley his first test as Deputy Chairman.
Mogul seem to have struck it rich in the Bay of Biscay. But it means danger for Thornton and Langley.
A computer brings Thornton and Izard into contact with an ambitious girl and an extraordinary man in the outback.
Drama at sea as Peter Thornton and H.M.S. Ark Royal race to the rescue of a stricken tanker.
Disaster or triumph? Willy Izard faces the two extremes in the rarified air of Mexico City, as he tackles his toughest-ever test, both in business and his private life.
A Polynesian paradise - or is it? Thornton finds out that even the South Pacific has its share of difficult people.
Raising money is never simple - but even Willy Izard finds it tough when Stead and Langley demand several million pounds each, before four o'clock.
Corsica's main export is brains, they say. It is also the birthplace of Napoleon - and Thornton, Izard and Langley find they are not allowed to forget it.
Willy Izard intends to spend his South of France holiday nursing his wife back to health and forgetting about Mogul. But escape is not so easy, even on a camping site.
Weekends are for taking off. It's a nice thought. But men like Stead and Langley can't always separate their private lives from their business.
Traditions often die hard. But Thornton meets with more violent opposition when Mogul's New Zealand pipeline clashes with Maori interests.
A wage claim at Mogul's biggest chemical works brings Stead into an unlikely alliance with a communist shop steward in a head-on clash with Langley.
Brian Stead takes an extended holiday with Lord Hawkscombe, who offers Mogul the chance to test their new rocket fuel on a disused island but it means removing a thriving hippie commune