Lost World Series by Dennis Wheatley, Rosemarie Hundertmarck

Atlantis: for centuries the magic of that name has haunted man's imagination.Now, an incredible expedition is being prepared. Its destination: the final resting place of the ancient gold-encrusted city – one mile beneath the surface of the sea. For the lovely Camilla and her band of adventurers the days to come are full of danger. Ahead lies the silence of the unknown Deeps – and a nightmare of terror and betrayal... moreAtlantis: for centuries the magic of that name has haunted man's imagination.Now, an incredible expedition is being prepared. Its destination: the final resting place of the ancient gold-encrusted city – one mile beneath the surface of the sea. For the lovely Camilla and her band of adventurers the days to come are full of danger. Ahead lies the silence of the unknown Deeps – and a nightmare of terror and betrayal."Dennis Wheatley has conceived one of the most amazing tales since the days of Jules Verne and Wells...boredom vanishes with the wave of Wheatley's magic pen." -Los Angeles Times less

In the face of an Atlantic hurricane, two girls and a boatload of men, of all races and colours, pit their strength against the appalling rigours of the open sea. Tension mounts. The desirable Synolda is forced into the arms of a man who knows her past and uses that knowledge. A man with hatred in his eyes – a hatred that can only be satisfied with blood.There is mutiny and murder before the unrelenting Sargasso weed entombs them all... moreIn the face of an Atlantic hurricane, two girls and a boatload of men, of all races and colours, pit their strength against the appalling rigours of the open sea. Tension mounts. The desirable Synolda is forced into the arms of a man who knows her past and uses that knowledge. A man with hatred in his eyes – a hatred that can only be satisfied with blood.There is mutiny and murder before the unrelenting Sargasso weed entombs them all. But suddenly land is sighted – land unmarked on the chart, concealing unimaginable horrors. less

When German submarines were sinking so much Allied shipping that Britain faced the danger of starvation, Dennis Wheatley - then a member of the War Cabinet's Joint Planning Staff - suggested that a system of raft convoys, moved by the Gulf Stream and prevailing winds, should be used to float essential supplies across the Atlantic. This story is based on that idea... moreWhen German submarines were sinking so much Allied shipping that Britain faced the danger of starvation, Dennis Wheatley - then a member of the War Cabinet's Joint Planning Staff - suggested that a system of raft convoys, moved by the Gulf Stream and prevailing winds, should be used to float essential supplies across the Atlantic. This story is based on that idea.Philip Vaudell leaves the United States on a solitary raft, but when he comes across a ploy that would put him in danger, he casts away from his crew and the raft is left in the lap of the gods.But, with Philip was the other real trouble - in the enticing shape of red-headed Gloria, who had stowed away on his raft. Instead of drifting into European waters, they are carried down to the Antarctic where, amidst its eternal snows, he discovers a large area with a warm climate and populated by a lost race. Will they be able to make contact and request rescue, or will they be forced to find a way to integrate with these people? Furthermore, will they be welcomed, or used as part of their ritual human sacrifice? less